Breathing mode for systems of interacting particles (2009)
Olivetti, A., Barré, J., Marcos, B., Bouchet, F., Kaiser, R.
We study the breathing mode in systems of trapped interacting particles. Our approach, based on a dynamical ansatz in the first equation of the Bogolyubov-Born-Green-Kirkwood-Yvon (BBGKY) hierarchy...
Technical Design Report for the PANDA Solenoid and Dipole Spectrometer Magnets (2009)
Keshelashvili, I., Krusche, B., Steinacher, M., Heng, Y., Liu, Z., ...
This document is the Technical Design Report covering the two large spectrometer magnets of the PANDA detector set-up. It shows the conceptual design of the magnets and their anticipated performance....
Physics Performance Report for PANDA: Strong Interaction Studies with Antiprotons (2009)
Erni, PANDA Collaboration: W., Keshelashvili, I., Krusche, B., Steinacher, M., Heng, Y., Liu, Z., ...
To study fundamental questions of hadron and nuclear physics in interactions of antiprotons with nucleons and nuclei, the universal PANDA detector will be built. Gluonic excitations, the physics of...
Observation of the Naive-T-odd Sivers Effect in Deep-Inelastic Scattering (2009)
HERMES Collaboration, DESY Forschung Hochenergiephysik, A. Airapetian, N. Akopov, Z. Akopov, E.C. Aschenauer, ...
Internal report | Preprint
HERMES Collaboration, DESY Forschung Hochenergiephysik, A. Airapetian, N. Akopov, Z. Akopov, E.C. Aschenauer, ...
Internal report | Preprint
Exclusive rho-0 electroproduction on transversely polarized protons (2009)
HERMES Collaboration, DESY Forschung Hochenergiephysik, A. Airapetian, N. Akopov, Z. Akopov, E.C. Aschenauer, ...
Internal report | Preprint
A. Airapetian, DESY Forschung Hochenergiephysik, N. Akopov, Z. Akopov, E.C. Aschenauer, W. Augustyniak, ...
Internal report | Preprint
Future GPD Measurements 2008-10-06 - 2008-10-11 (2009)
R. Kaiser, DESY Forschung Hochenergiephysik
Contribution to a conf. proceeding (book/online)
Search for a Two-Photon Exchange Contribution to Inclusive Deep-Inelastic Scattering (2009)
A. Airapetian, DESY Forschung Hochenergiephysik, N. Akopov, Z. Akopov, E.C. Aschenauer, W. Augustyniak, ...
Internal report | Preprint
A. Airapetian, DESY Forschung Hochenergiephysik, N. Akopov, Z. Akopov, A. Andrus, E.C. Aschenauer, ...
Journal article
Exclusive ρ0 electroproduction on transversely polarized protons (2009)
A. Airapetian, DESY Forschung Hochenergiephysik, N. Akopov, Z. Akopov, E.C. Aschenauer, W. Augustyniak, ...
Journal article
The HERMERS Collaboration, DESY Forschung Hochenergiephysik, A. Airapetian, N. Akopov, Z. Akopov, E.C. Aschenauer, ...
Internal report | Preprint
Observation of the Naive-T-odd Sivers Effect in Deep-Inelastic Scattering (2009)
HERMES Collaboration, DESY Forschung Hochenergiephysik, A. Airapetian, N. Akopov, Z. Akopov, E.C. Aschenauer, ...
Journal article
A. Airapetian, DESY Forschung Hochenergiephysik, N. Akopov, Z. Akopov, M. Amarian, E.C. Aschenauer, ...
Internal report | Preprint
A. Airapetian, DESY Forschung Hochenergiephysik, N. Akopov, Z. Akopov, M. Amarian, E.C. Aschenauer, ...
Internal report | Preprint
Obermeier, MJ, Berg, T, Sichtig, N, Braun, P, Däumer, MP, Walter, H, ...
No abstract available.
Photon localization and Dicke superradiance in atomic gases (2008)
Akkermans, E., Gero, A., Kaiser, R.
Photon propagation in a gas of N atoms is studied using an effective Hamiltonian describing photon mediated atomic dipolar interactions. The density P(\Gamma) of photon escape rates is determined...
Cross sections for hard exclusive electroproduction of pi(+) mesons on a hydrogen target (2008)
AIRAPETIAN, A, AKOPOV, N, AKOPOV, Z, ASCHENAUER, EC, AUGUSTYNIAK, W, AVETISSIAN, A, ...
53.5 GHz monolithically integrated pulse source for 107 Gb/s RZ-DQPSK transmission (2008)
Schubert, C., Ludwig, R., Hüttl, B., Kaiser, R., Hu, H., Steffan, A., ...
We present a 53.5 GHz monolithic pulse source, applied as transmitter in a single-channel, 107 Gb/s RZ-DQPSK system with 100 GHz filtering. Error-free transmission over 480 km was demonstrated.
Hüttl, B., Hu, H., Ludwig, R., Kaiser, R., Schmidt-Langhorst, C., Steffan, A.G., ...
The linewidth of an improved 40 GHz modelocked laser diode is investigated. The influence of its operation parameters on linewidth and the resulting performance in a 40Gband-DQPSK system is evaluated.
HERMES Collaboration, DESY Forschung Hochenergiephysik, A. Airapetian, N. Akopov, Z. Akopov, A. Andrus, ...
Internal report | Preprint
Airapetian, A., Akopov, N., Akopov, Z., Andrus, A., Aschenauer, E.C., ...
"Azimuthal asymmetries in exclusive electroproduction of real photons are measured for the first time with respect to transverse target polarisation, providing new constraints on Generalized Parton...
Modengekoppelte Halbleiterlaser-Pulsquelle (2007)
Kaiser, R., Fidorra, S., Heidrich, H., Huettl, B.
WO2004102753 A UPAB: 20050112 NOVELTY - The semiconductor laser pulse source has an integrated waveguide layer structure having a tuning region for the pulse repetition frequency, an amplifier...
Fidorra, S., Heidrich, H., Huettl, B., Kaiser, R., Kindel, C., Rehbein, W.
DE 102005017677 A1 UPAB: 20061208 NOVELTY - The method involves selecting quantum well layers from two optimization criteria for the performance of semiconductor laser pulse source under the...
Monolithic 40-GHz mode-locked MQW DBR lasers for high-speed optical communication systems (2007)
The state-of-the-art of the development and fabrication of advanced 1.55- micrometer/40-GHz pulse laser modules with a monolithic InP-based mode- locked distributed Bragg reflector (DBR) MQW laser...
Sauer, D.U., Karden, E., Fricke, B., Blanke, H., Thele, M., Bohlen, O., ...
Operating conditions of batteries in off-grid renewable energy systems (2007)
Svoboda, V, Wenzl, H, Kaiser, R, Jossen, A, Baring-Gould, I, Manwell, J, ...
Beam-Spin Asymmetries in the Azimuthal Distribution of Pion Electroproduction. (2007)
A. Airapetian, DESY Forschung Hochenergiephysik, Z. Akopov, M. Amarian, A. Andrus, E.C. Aschenauer, ...
Journal article
Operating conditions of batteries in off-grid renewable energy systems (2007)
Svoboda, V., Wenzl, H., Kaiser, R., Jossen, A., Baring-Gould, I., Manwell, J., ...
Operating conditions in off-grid renewable energy systems (RES) vary significantly in different applications and locations. To describe RES and the operating conditions of their components it is...
AFFectIX - an affective component as part of an e-learning-system (2007)
Oertel, K., Kaiser, R., Voskamp, J., Urban, B.
This paper presents a system component, so called AFFectIX, as anaffix to an e-learning system which was that way enhanced with affective abilities. AFFectIX is based on an emotion recognition sensor...
Hadronization in semi-inclusive deep-inelastic scattering on nuclei (2007)
AIRAPETIAN, A, AKOPOV, N, AKOPOV, Z, ASCHENAUER, EC, AUGUSTYNIAK, W, AVAKIAN, R, ...
Transverse polarization of Lambda and (Lambda)over-bar hyperons in quasireal photoproduction (2007)
AIRAPETIAN, A, AKOPOV, N, AKOPOV, Z, AMARIAN, M, AMMOSOV, VV, ANDRUS, A, ...
Bunching-induced asymmetry in degenerate four-wave mixing with cold atoms (2006)
Gattobigio, G.L., Michaud, F., Javaloyes, Julien, Tabosa, J.W.R., Kaiser, R.
PACS numbers: 32.80.Pj, 42.50.Gy, 03.67.-a.
Towards a consistent estimate of the chiral low-energy constants (2006)
Cirigliano, V., Ecker, G., Eidemüller, M., Kaiser, R., Pich, Antonio, Portolés, Jorge
Guided by the large-N_C limit of QCD, we construct the most general chiral resonance Lagrangian that can generate chiral low-energy constants up to O(p^6). By integrating out the resonance fields,...
Prototypische Entwicklung einer affektiven Komponente für ein E-Learning-System (2006)
Despite the ongoing development in technology over the past decades, computers still do not consider emotions of their users, even though many studies showed how important they are for human-computer...
40 GHz mode-locked semiconductor lasers: Theory, simulations and experiment (2006)
Bandelow, U., Radziunas, M., Vladimirov, A., Hüttl, B., Kaiser, R.
We study both theoretically and experimentally typical operation regimes of 40 GHz monolithic mode-locked lasers. The underlying Traveling Wave Equation model reveals quantitative agreement for...
Hüttl, B., Kaiser, R., Kindel, C., Fidorra, S., Rehbein, W., Stolpe, H., ...
Inherent Q switching as a source of intracavity pulse energy modulations, i.e., unwanted amplitude noise, is still a challenging task in order to fabricate monolithic mode-locked semiconductor lasers...
Q-switching instability in a mode-locked semiconductor laser (2006)
Rachinskii, D., Vladimirov, A., Bandelow, U., Hüttl, B., Kaiser, R.
We suggest semianalytic estimates for the Q-switching instability boundary of the continuous-wave (cw) mode-locking regime domain for a ring-cavity semiconductor laser. We use a differential delay...
The HERMES Recoil Detector 2005-10-24 - 2005-10-28 (2006)
R. Kaiser, DESY Forschung Hochenergiephysik
Contribution to a conf. proceeding (journal)
Arevir: a secure platform for designing personalized antiretroviral therapies against HIV (2006)
Roomp, K., Beerenwinkel, N., Sing, T., Schuelter, E., Buech, J., Sierra-Aragon, S., ...
Double-hadron leptoproduction in the nuclear medium (2006)
AIRAPETIAN, A, AKOPOV, N, AKOPOV, Z, AMARIAN, M, ANDRUS, A, ASCHENAUER, EC, ...
The < S P P > Green function and SU(3) breaking in $K_{l3}$ decays (2005)
Cirigliano, V, Ecker, G, Eidemüller, M, Kaiser, R, Pich, Antonio, Portolés, J
Using the 1/N_C expansion scheme and truncating the hadronic spectrum to the lowest-lying resonances, we match a meromorphic approximation to the < S P P > Green function onto QCD by imposing the...
The < S P P > Green function and SU(3) breaking in K_{l3} decays (2005)
Cirigliano, V., Ecker, G., Eidemuller, M., Kaiser, R., Pich, A., Portoles, J.
Using the 1/N_C expansion scheme and truncating the hadronic spectrum to the lowest-lying resonances, we match a meromorphic approximation to the < S P P > Green function onto QCD by imposing the...
Erstellung von Readmaps (2005)
Seit Ende der 90er Jahre werden im Fraunhofer Institut für Graphische Datenverarbeitung in Rostock im Rahmen des RealEYES-Projekts Werkzeuge zur Usability-Evaluation entwickelt. Zudem wurde in der...
Photonic integration on InP for telecom and datacom applications (2005)
The current and future role of photonic InP integration in order to provide suitable single chip components for telecom and datacom markets is emphasized under the requirement of existing alternative...
40 GHz semiconductor mode-locked laser pulse source for 160 Gbit/s RZ-DPSK data transmission (2005)
Schubert, C., Ferber, S., Kroh, M., Schmidt-Langhorst, C., Ludwig, R., Hüttl, B., ...
We report on a monolithically integrated mode-locked semiconductor laser with 40 GHz repetition rate, suitable for RZ-DPSK transmission. The performance of the source is demonstrated in a 160 Gbit/s...
Beerenwinkel, N., Sing, T., Lengauer, T., Rahnenfuhrer, J., Roomp, K., Savenkov, I., ...
The development of drug resistance is a major obstacle to successful treatment of HIV infection. The extraordinary replication dynamics of HIV facilitates its escape from selective pressure exerted...
Mtreemix: a software package for learning and using mixture models of mutagenetic trees (2005)
Beerenwinkel, N., Rahnenfuhrer, J., Kaiser, R., Hoffmann, D., Selbig, J., Lengauer, T.
Mixture models of mutagenetic trees constitute a class of probabilistic models for describing evolutionary processes that are characterized by the accumulation of permanent genetic changes. They have...
Low noise monolithic 40 GHz mode-locked DBR lasers based on GaInAsP/InP (2005)
Very short optical pulses (1.2-2.0 ps) with low amplitude noise (0.8-2.0 %) and low timing jitter (
Optical 40 GHz pulse source module based on a monolithically integrated mode locked DBR laser (2005)
The HERMES polarized hydrogen and deuterium gas target in the HERA electron storage ring (2005)
AIRAPETIAN, A, AKOPOV, N, AKOPOV, Z, AMARIAN, M, ANDRUS, A, ASCHENAUER, EC, ...
Measurement of the tensor structure function b(1) of the deuteron (2005)
AIRAPETIAN, A, AKOPOV, N, AKOPOV, Z, AMARIAN, M, AMMOSOV, VV, ANDRUS, A, ...
A silicon strip recoil detector for momentum measurement and tracking at HERMES (2004)
Reinecke, M., Gregor, I.M., Borissov, A., Hansen, K., Holler, Y., Hristova, I., ...
A recoil detector will be installed surrounding the internal gas target of the HERMES experiment at DESY. The recoil detector will improve the selection of exclusive events by a direct measurement of...
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Double-spin asymmetries of semiinclusive cross sections for the production of identified pions and kaons have been measured in deep inelastic scattering of polarized positrons on a polarized...
Comprehensive experimental studies on the effects of wavelength tuning on pulse, noise, and locking characteristics of monolithic 1.5 µm mode-locked SIPBH DBR lasers are presented in view of simple...
Learning multiple evolutionary pathways from cross-sectional data (2004)
Beerenwinkel, N., Rahnenführer, J., Daeumer, M., Hoffmann, D., Kaiser, R., Selbig, J., ...
Verification of improved lifetime models for batteries in hybrid systems (2004)
Bindner, H, Baring-Gould, I, Cronin, T, Douglas, K, Jossen, A, Kaiser, R, ...
Wenzl, H, Baring-Gould, I, Bindner, H, Bopp, G, Douglas, K, ...
Brennstoffzellen zur dezentralen Stromversorgung auf dem Rappenecker Hof (2004)
Kaiser, R., Reich, N., Roth, W., Steinhüser, A., Schneider, M., Höcker, V.
Der Rappenecker Hof (Gemarkung Oberried am Schauinsland / Freiburg) ist die erste solarversorgte Gaststätte Europas. Seit 1987 wird der Hof von einem Photovoltaik/ Wind/Diesel-Hybridsystem versorgt....
Brennstoffzellen zur dezentralen Stromversorgung auf dem Rappenecker Hof (2004)
Kaiser, R., Reich, N., Roth, W., Steinhüser, A., Schneider, M., Höcker, V.
Der Rappenecker Hof (Gemarkung Oberried am Schauinsland / Freiburg) ist die erste solarversorgte Gaststätte Europas. Seit 1987 wird der Hof von einem Photovoltaik/ Wind/Diesel-Hybridsystem versorgt....
Hard exclusive electroproduction of π+π-pairs (2004)
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Hard exclusive electroproduction of pi(+) pi(-) pairs off hydrogen and deuterium targets has been studied by the HERMES experiment at DESY Legendre moments (P-1) and (P-3) of the angular...
Evidence for a narrow |S|=1 baryon state at a mass of 1528 MeV in quasi-real photoproduction (2004)
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Evidence for a narrow baryon state is found in quasi-real photoproduction on a deuterium target through the decay channel pK(S)(0) → ppi(+)pi(-). A peak is observed in the pK(S)(0) invariant mass...
Nuclear polarization of molecular hydrogen recombined on a non-metallic surface (2004)
AIRAPETIAN, A, AKOPOV, N, AKOPOV, Z, AMARIAN, M, AMMOSOV, VV, ANDRUS, A, ...
A silicon strip recoil detector for momentum measurement and tracking at HERMES (2004)
REINECKE, M, GREGOR, IM, BORISSOV, A, HANSEN, K, HOLLER, Y, HRISTOVA, I, ...
Hard exclusive electroproduction of pi(+)pi(-) pairs (2004)
AIRAPETIAN, A, AKOPOV, N, AKOPOV, Z, AMARIAN, M, AMMOSOV, VV, ANDRUS, A, ...
A silicon strip recoil detector for momentum measurement and tracking at HERMES (2004)
REINECKE, M, GREGOR, IM, BORISSOV, A, HANSEN, K, HOLLER, Y, HRISTOVA, I, ...
Relaxed plasma-vacuum states in cylinders (2004)
The variational principle for relaxed toroidal plasma–vacuum systems with pressure is applied to axially periodic circular cylinders. More precisely, equilibria with cylindrical symmetry are...
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Double-spin asymmetries in the cross section of electroproduction of rho /sup 0/ and phi mesons on the proton and deuteron are measured at the HERMES experiment. The photoabsorption asymmetry in...
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Single-spin asymmetries have been measured for semi-inclusive electroproduction of pi /sup +/, pi /sup -/, pi /sup 0/ and K/sup +/ mesons in deep-inelastic scattering off a longitudinally polarised...
Evidence for quark-hadron duality in the proton spin asymmetry A1 (2003)
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Aschenauer, E.C., ...
Spin-dependent lepton-nucleon scattering data have been used to investigate the validity of the concept of quark-hadron duality for the spin asymmetry A1. Longitudinally polarized positrons were...
Q2 dependence of nuclear transparency for exclusive rho0 production (2003)
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Exclusive coherent and incoherent electroproduction of the rho(0) meson from H-1 and N-14 targets has been studied at the HERMES experiment as a function of coherence length (l(c)), corresponding to...
Saturation induced coherence loss in coherent backscattering of light (2003)
Chanelière, T., Wilkowski, D., Bidel, Y., Kaiser, R., Miniatura, C.
We use coherent backscattering (CBS) of light by cold Strontiumatoms to study the mutual coherence of light waves in the multiplescattering regime. As the probe light intensity is increased,...
Wilkowski, D., Bidel, Y., Chanelière, T., Kaiser, R., Klappauf, B., Labeyrie, G., ...
The recent observation of coherent backscattering (CBS) of light by atomshas emphasized the key role of the velocity spread and of thequantum internal structure of the atoms. Firstly, using highly...
Geno2pheno: estimating phenotypic drug resistance from HIV-1 genotypes (2003)
Beerenwinkel, N., Daumer, M., Oette, M., Korn, K., Hoffmann, D., Kaiser, R., ...
Therapeutic success of anti-HIV therapies is limited by the development of drug resistant viruses. These genetic variants display complex mutational patterns in their pol gene, which codes for...
Methods for optimizing antiviral combination therapies. (2003)
Beerenwinkel, N., Lengauer, T., Däumer, M., Kaiser, R., Walter, H., Korn, K., ...
Tenofovir resistance and resensitization (2003)
Wolf, K., Walter, H., Beerenwinkel, N., Keulen, W., Kaiser, R., Hoffmann, D., ...
Human immunodeficiency viruses in 321 samples from tenofovir-naive patients were retrospectively evaluated for resistance to this nucleotide analogue. All virus strains with insertions between amino...
Noise performance of mode-locked 40 GHz pulse source modules (2003)
Huettl, B., Kaiser, R., Kroh, M., Rehbein, W., Stolpe, H., Fidorra, S., ...
The implementation of high capacity optical communication networks, based on WDM and high speed (O)TDM technologies, needs high performance and low cost high speed transmitters in the future....
Repetition rate and wavelength tuning of monolithic 40 GHz mode-locked lasers based on InP (2003)
Kaiser, R., Hüttl, B., Rehbein, W., Stolpe, H., Heidrich, H., Fidorra, S., ...
Repetition rate and wavelength tuning of monolithic 40 GHz InP-based pulse lasers are investigated experimentally. 2 ps pulses with low timing jitter at large locking bandwidth are observed over a...
Monolithic mode-locked laser on GaInAsP/InP for 160 Gb/s TDM (2003)
Hüttl, B., Kaiser, R., Boczianowski, F., Fidorra, S., Heidrich, H., Jacumeit, G., ...
Mode-locked laser OEICs on GaInAsP/InP for 160 Gb/s application in hybrid mode-locking operation are demonstrated with 40 GHz repetition rate, 2.4 ps pulse length, 230 fs timing jitter, and >1 mW...
Tunable monolithic mode-locked lasers on InP with low timing jitter (2003)
Kaiser, R., Hüttl, B., Heidrich, H., Fidorra, S., Rehbein, W., Stolpe, H., ...
Pulse trains with only 2 ps in width and low root-mean-square timing jitter of 220 fs are demonstrated from fine tunable monolithic 40-GHz laser integrated circuits on GaInAsP-InP. The repetition...
Coherent backscattering of light by an inhomogeneous cloud of cold atoms (2003)
Labeyrie, G., Delande, D., Müller, C. A., Miniatura, C., Kaiser, R.
Standard evaluation of renewable energy systems (2003)
Kaiser, R, Sauer, DU, Wenzl, H, Baring-Gould, I, Wilmot, N, Mattera, F, ...
Development of battery lifetime models for energy storage systems in renewable energy systems (2003)
Kaiser, R, Wenzl, H, Baring-Gould, I, Wilmot, N, Mattera, F, Tselepis, S, ...
Saturation induced coherence loss in coherent backscattering of light (2003)
Chanelière, T., Wilkowski, D., Bidel, Y., Kaiser, R., Miniatura, C.
We use coherent backscattering (CBS) of light by cold Strontiumatoms to study the mutual coherence of light waves in the multiplescattering regime. As the probe light intensity is increased,...
Wilkowski, D., Bidel, Y., Chanelière, T., Kaiser, R., Klappauf, B., Labeyrie, G., ...
The recent observation of coherent backscattering (CBS) of light by atomshas emphasized the key role of the velocity spread and of thequantum internal structure of the atoms. Firstly, using highly...
Q2 dependence of nuclear transparency for exclusive rho0 production (2003)
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Exclusive coherent and incoherent electroproduction of the rho(0) meson from H-1 and N-14 targets has been studied at the HERMES experiment as a function of coherence length (l(c)), corresponding to...
Quark fragmentation to pi(+/-), pi(0), K-+/-, p and (p)over-bar in the nuclear environment (2003)
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
The influence of the nuclear medium on lepto-production of hadrons was studied in the HERMES experiment at DESY in semi- inclusive deep-inelastic scattering of 27.6 GeV positrons off deuterium,...
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Aschenauer, E.C., ...
The Gerasimov-Drell-Hearn (GDH) sum rule connects the anomalous contribution to the magnetic moment of the target nucleus with an energy-weighted integral of the difference of the helicity- dependent...
Perspectives for a next-generation electron-nucleon scattering facility in Europe (2003)
This paper discusses perspectives for a future fixed-target electron-nucleon scattering facility in Europe. Based on the intended measurements the requirements on accelerator, target and spectrometer...
Quark fragmentation to pi(+/-), pi(0), K-+/-, p and (p)over-bar in the nuclear environment (2003)
AIRAPETIAN, A, AKOPOV, N, AKOPOV, Z, AMARIAN, M, AMMOSOV, VV, ANDRUS, A, ...
Single-spin azimuthal asymmetry in exclusive electroproduction of pi /sup +/ mesons (2002)
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Aschenauer, E.C., Avakian, H., ...
A single-spin asymmetry in the distribution of exclusively produced pi /sup +/ mesons azimuthally around the virtual photon direction relative to the lepton scattering plane has been measured for the...
Beerenwinkel, N., Schmidt, B., Walter, H., Kaiser, R., Lengauer, T., Hoffmann, D., ...
Drug resistance testing has been shown to be beneficial for clinical management of HIV type 1 infected patients. Whereas phenotypic assays directly measure drug resistance, the commonly used...
Quantitative phenotype prediction by support vector machines (2002)
Beerenwinkel, N., Schmidt, B., Walter, H., Kaiser, R., Lengauer, T., Hoffmann, D., ...
Geno2pheno is predictive of short-term virological response (2002)
Beerenwinkel, N., Daumer, M., Sierra, S., Schmidt, B., Walter, H., Korn, K., ...
Wartungsfreie autonome Stromversorgung mit Parallelbetrieb verschiedener Speichertechnologien (2002)
The economic success of monolithic optoelectronic and photonic ICs (OEICs, PICs) on InP depends strongly on their cost and performance. Taking into account these requirements as well as today's...
Stromversorgungs-Einrichtung (2002)
WO 200260030 A UPAB: 20020916 NOVELTY - The device has a photovoltaic generator and accumulators supplied by the generator and to which a load is connected. Several secondary accumulators of various...
OPTOELEKTRONISCHE SCHALTUNG (2002)
Heidrich, H., Kaiser, R., Hamacher, M.
DE 19522591 A UPAB: 19970205 The optoelectronic integrated circuit contains a first interface (7) for a first light conductor, for an essentially monochrome source (5) of light having a first...
Beerenwinkel, N., Schmidt, B., Walter, H., Kaiser, R., Lengauer, T., Hoffmann, D., ...
Drug resistance testing has been shown to be beneficial for clinical management of HIV type 1 infected patients. Whereas phenotypic assays directly measure drug resistance, the commonly used...
The HERMES dual-radiator ring imaging Cherenkov detector (2002)
Akopov, N., Aschenauer, E.C., Bailey, K., Bernreuther, S., Bianchi, N., Capitani, G.P., ...
The construction and use of a dual radiator Ring Imaging Cherenkov (RICH) detector is described. This instrument was developed for the HERMES experiment at DESY which emphasises measurements of...
The HERMES dual-radiator ring imaging Cherenkov detector. (2002)
AKOPOV, N, ASCHENAUER, EC, BAILEY, K, BERNREUTHER, K, BIANCHI, N, CAPITANI, GP, ...
Airapetian, A., Akopov, N., Amarian, M., Aschenauer, E.C., Avakian, H., Avakian, R., ...
Spin transfer in deep-inelastic Lambda electroproduction has been studied with the HERMES detector using the 27.6 GeV polarized positron beam in the DESY HERA storage ring. For an average fractional...
Airapetian, A, Akopov, N., Akopov, Z., Amarian, M, Aschenauer, E.C., Avakian, H., ...
A single-spin asymmetry in the azimuthal distribution of neutral pions relative to the lepton scattering plane has been measured for the first time in deep-inelastic scattering of positrons off...
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Arrington, J., Aschenauer, E.C., ...
Evidence for a positive longitudinal double-spin asymmetry (A/sub 1//sup rho /)=0.24+or-0.11/sub stat/+or-0.02/sub syst/ in the cross section for exclusive diffractive rho /sup 0/(770) vector-meson...
Status of InP-based metal organic MBE with reference to conventional MBE and MOVPE (2001)
Kunzel, H., Gibis, R., Kaiser, R., Malchow, S., Schelhase, S.
The applicability of selective area MOMBE for the monolithic integration of optoelectronic devices has been demonstrated. Selective deposition, either selective area or selective infill growth, was...
Heidrich, H., Kaiser, R., Albrecht, P., Fidorra, S., Hamacher, M., Rehbein, W.
Optical crosstalk from a 1.3 mu m laser to a 1.55 mu m photodiode on a single InP substrate, and its suppression within 1.3 mu m/1.5 mu m Y-junction transceiver OEICs, has been analyzed...
Geno2pheno: Interpreting genotypic HIV drug resistance tests (2001)
Beerenwinkel, N., Lengauer, T., Selbig, J., Schmidt, B., Walter, H., Korn, K., ...
This intelligent system uses information encoded in the HIV genomic sequence to predict the virus's resistance or susceptibility to drugs. To make predictions, geno2pheno employs decision tree...
Hadron formation in deep-inelastic positron scattering in a nuclear environment (2001)
Airapetian, A., Akopov, N., Akopov, Z., Akushevich, I., Amarian, T., Arrington, J., ...
The influence of the nuclear medium on the production of charged hadrons in semi-inclusive deep-inelastic scattering has been studied by the HERMES experiment at DESY using a 27.5 GeV positron beam....
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Aschenauer, E.C., Avakian, H., ...
The beam spin asymmetry in hard electroproduction of photons was measured in the missing-mass (Mx) range upto 7 GeV. A nonzero asymmetry was observed in the exclusive domain for Mx [less-than or...
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Arrington, J., Aschenauer, E.C., ...
Measurements of the individual multiplicities of pi /sup +/, pi /sup -/ and pi /sup 0/ produced in the deep-inelastic scattering of 27.5 GeV positrons on hydrogen are presented. The average charged...
Künzli, N., Medina, S., Kaiser, R., Quénel, P., Horak, F., Studnicka, M.
Epidemiologic studies are crucial to the estimation of numbers of deaths attributable to air pollution. In this paper, the authors present a framework for distinguishing estimates of attributable...
Optical crosstalk within monolithic transceiver ICs on GaInAsP/InP (2000)
Kaiser, R., Hamacher, M., Heidrich, H., Albrecht, P., Janiak, K., Malchow, S., ...
Static optical crosstalk within monolithic 1.3 mu m/1.5 mu m transceiver photonic integrated circuits (PICs) was studied. The efficiency of different optical barriers is analysed and a maximum...
Hamacher, M., Kaiser, R., Heidrich, H., Albrecht, P., Borchert, B., Janiak, K., ...
This paper reports on 1.3 mu m complex coupled DFB lasers, 1.55 mu m (wavelength selective) photodiodes and passive spot size converters integrated with Y-shaped waveguide structures on InP,...
Steingrüber, R., Trommer, D., Kaiser, R., Pfeiffer, K., Tiedke, I.
The fabrication of integrated spot size converters employing standard contact photolithography in a novel way and dry etching technique is presented. During the exposure the mask is shifted parallel...
MOMBE: Superior epitaxial growth for InP-based monolithically integrated photonic circuits (2000)
Gibis, R., Kizuki, H., Albrecht, P., Harde, P., Urmann, G., Kaiser, R., ...
Basic developmental steps are outlined for the application of metal organic molecular beam epitaxy as an epitaxial fabrication process for InP-based integrated photonic circuits. Besides high-quality...
Used Optical characterization of n=1.03 silica aerogel as radiator in the RICH of HERMES. (2000)
ASCHENAUER, E, BIANCHI, N, CAPITANI, GP, CARTER, P, CASALINO, C, CISBANI, E, ...
Observation of a coherence length effect in exclusive ρ(0) electroproduction (1999)
Ackerstaff, K., Airapetian, A., Akopov, N., Akushevich, I., Amarian, M., Aschenauer, E. C., ...
Exclusive incoherent electroproduction of the ρ0(770) meson from 1H, 2H, 3He, and 14N targets has been studied by the HERMES experiment at squared four-momentum transfer Q^2>0.4 GeV^2 and positron...
Beam-induced nuclear depolarization in a gaseous polarized-hydrogen target (1999)
Ackerstaff, K., Airapetian, A., Akopov, N., Amarian, M., Aschenauer, E. C., Avakian, H., ...
Spin-polarized atomic hydrogen is used as a gaseous polarized-proton target in high-energy and nuclear-physics experiments operating with internal beams in storage rings. When such beams are intense...
Monolithically integrated 1.5 mu m/1.3 mu m transceiver modules for full-duplex operation (1999)
Hamacher, M., Heidrich, H., Kaiser, R., Albrecht, P., Ebert, W., Franke, D., ...
1.5/1.3 mu m transceiver-photonic integrated circuits (PICs) with in-line and Y-junction architecture including a 1.3- mu m wavelength-selective photodetector building block have been fabricated. The...
Harde, P., Gibis, R., Kaiser, R., Kizuki, H., Kunzel, H.
The regrowth behaviour of and dopant diffusion in (Ga)In(As)P:Fe layers selectively deposited by metalorganic MBE was assessed. Device quality regrowth and the absence of lateral diffusion and...
Flavor asymmetry of the light quark sea from semi-inclusive deep-inelastic scattering (1998)
Ackerstaff, K., Airapetian, A., Akopov, N., Akushevich, I., Amarian, M., Ashenauer, E. C., ...
The flavor asymmetry of the light quark sea of the nucleon is determined in the kinematic range 0.02 < x < 0.3 and 1 < Q(2) < 10 GeV2 for the first time from semi-inclusive deep-inelastic scattering....
Full-duplex WDM transceiver PICs (1998)
Hamacher, M., Heidrich, H., Kaiser, R., Albrecht, P., Ebert, W., Malchow, S., ...
Results on the development of monolithically integrated bi-directional full duplex WDM GaInAsP-InP transceivers for dual spectral window operation (1.3 and 1.5 mu m) are reported. Their fabrication...
Kunzel, H., Ebert, S., Gibis, R., Harde, P., Kaiser, R., Kizuki, H., ...
The potential of metal organic MBE for selective deposition of InP/GaInAsP passive optical waveguide structures was studied for butt coupling with an active laser waveguide. By use of appropriate...
Kaiser, R., Hamacher, M., Heidrich, H., Albrecht, P., Ebert, W., Gibis, R., ...
A versatile and extendable integration process suitable for future economic fabrication of photonic integrated circuits (PICs) is described. The advantages and technological challenges are emphazised...
MOMBE grown GaInAsP (lambda g=1.05/1.15 mu m) waveguide for laser integrated photonic ICs (1998)
Kuenzel, H., Gibis, R., Kizuki, H., Albrecht, P., Ebert, S., Harde, P., ...
The fabrication of advanced undoped and semi-insulating optical waveguides to be implemented in integrated photonic ICs on InP is demonstrated on the basis of the metal organic molecular beam epitaxy...
Selective MOMBE growth of InP-based waveguide/laser butt-joints (1998)
Kuenzel, H., Ebert, S., Gibis, R., Kaiser, R., Kizuki, H., Malchow, S., ...
Selective metal organic molecular beam epitaxy regrowth of InP/GaInAsP passive optical waveguide structures was studied to accomplish butt coupling to an active laser waveguide. Selective deposition...
Kunzel, H., Albrecht, P., Ebert, S., Gibis, R., Harde, P., Kaiser, R., ...
Iron doping of InP and GaInAsP( lambda g=1.05 mu m) layers grown by metalorganic molecular beam epitaxy was studied using elemental source material in combination with a conventional effusion cell....
Grosskopf, G., Heidrich, H., Helmolt, C. Von, Kaiser, R., Kruger, K., ...
Experiments on the optical generation and transmission of millimeter-wave radio signals are reported. The millimeter-wave signals are generated by heterodyning the optical spectral lines of a...
Selective MOMBE growth behaviour at the lateral interface of waveguide/laser butt-joints (1997)
Kunzel, H., Ebert, S., Gibis, R., Kaiser, R., Kizuki, H., Malchow, S.
Selective MOMBE growth of InP-GaInAsP optical waveguide structures by MOMBE was studied for butt coupling with a double heterostructure (DH) laser. Selective deposition was accomplished at a growth...
Kunzel, H., Albrecht, P., Ebert, S., Gibis, R., Harde, P., Kaiser, R., ...
Iron doping using elemental source material evaporated from a conventional effusion cell was applied during MOMBE growth of semi-insulating InP and GaInAsP( lambda =1.05 mu m) for waveguide...
Roehle, H., Schroeter-Janssen, H., Kaiser, R.
Layer structures comprising InP and InGaAsP were compared when grown using nitrogen versus hydrogen as carrier gas. Under nitrogen a remarkable improvement in layer uniformity in terms of thickness...
Bi-directional photonic integrated transceivers for optical communication systems (1996)
Heidrich, H., Hamacher, M., Kaiser, R., Wenger, G., Albrecht, P., Loffler, R., ...
Bi-directional, full duplex transceiver InP/GaInAsP PIC architectures with high crosstalk suppression ratio values for single and dual spectral window operation (1.3 mu m and 1.5 mu m) are reported...
Fiestas Cueto, H., Kaiser, R., Robeck, A.
Die Flexibilität eines Unternehmens muß durch die Einführung eines Qualitätsmanagement-Systems nicht leiden. Die Sortimat Automations GmbH, Hersteller von Montagemaschinen für Kleiteile aus dem...
Measurement of the proton and the deuteron structure functions, F$_{2}^{p}$ and F$_{2}^{d}$ (1995)
Arneodo, M, Arvidson, A, Badelek, B, Ballintijn, M K, Baum, G, Beaufays, J, ...
Large enhancement of deuteron polarization with frequency modulated microwaves (1995)
Adeva, B, Ahmad, E, Arik, S, Arvidson, A, Badelek, B, Ballintijn, M K, ...
We report a large enhancement of 1.7 in deuteron polarization up to values of 0.6 due to frequency modulation of the polarizing microwaves in a two liters polarized target using the method of dynamic...
Enhancement of nuclear polarization with frequency modulated microwaves (1995)
Adeva, B, Arik, E, Ahmad, S, Arvidson, A, Badelek, B, Ballintijn, M K, ...
The structure function ratios F$_{2}^{Li}$/F$_{2}^{D}$ and F$_{2}^{C}$/F$_{2}^{D}$ at small x (1995)
Arneodo, M, Arvidson, A, Badelek, B, Ballintijn, M K, Baum, G, Beaufays, J, ...
We present the structure function ratios F2(Li)/F2(D) and F2(C)/F2(D) measured in deep inelastic muon-nucleus scattering at a nominal incident muon energy of 200 GeV. The kinematic range 0.0001 < x <...
Braun, R.P., Kaiser, R., Rohde, D., Stenzel, R., Trommer, D., Heidrich, H., ...
Radio-over-fiber systems are a new important area for photonic ICs. For the first time a tunable optical signal source is used for generating microwave frequencies up to 62.5 GHz. 70 Mbit/s data...
Multi-purpose dual tunable laser/combiner PIC based on InP (1995)
Trommer, D., Kaiser, R., Stenzel, R., Heidrich, H.
A photonic integrated circuit including two DBR lasers, a 3 dB coupler and a photodiode is presented. Precise tuning and stable generation of an optical beat spectrum in the GHz range is demonstrated.
The results and experiences from the first fabrication of polarization diversity heterodyne receiver photonic integrated circuits (PICs) are reviewed and further improvements towards a possible...
Monolithic integrated heterodyne receivers (1995)
Fidorra, F., Heidrich, H., Kaiser, R., Trommer, D.
Future communication networks should provide high capacity data transfer and enable a maximum of flexibility in network management. Optical frequency division multiplexing (OFDM) systems are widely...
A study of multipactor phenomena in the 52 MHz PETRA II cavity at DESY (1994)
Gonin, I V, Kravchuk, L V, Romanov, G V, Tarasov, S, Gamp, A, Kaiser, R, ...
Exclusive $\varrho^{0}$ and $\phi$ muoproduction at large Q$^{2}$ (1994)
Arneodo, M, Arvidson, A, Badelek, B, Ballintijn, M K, Baum, G, Beaufays, J, ...
Spin asymmetry in muon-proton deep inelastic scattering on a transversely-polarized target (1994)
Adams, D, Adeva, B, Arik, E, Arvidson, A, Badelek, B, Ballintijn, M K, ...
We measured the spin asymmetry in the scattering of 100 GeV longitudinally-polarized muons on transversely polarized protons. The asymmetry was found to be compatible with zero in the kinematic range...
Measurement of the spin-dependent structure function g$_{1}$(x) of the proton (1994)
Adams, D, Adeva, B, Arik, E, Arvidson, A, Badelek, B, Ballintijn, M K, ...
Abstract : We have measured the spin-dependent structure function g_1^p of the proton in deep inelastic scattering of polarized muons off polarized protons, in the kinematic range 0.003
Measurement of the deuteron polarization in a large target (1994)
Adeva, B, Ahmad, S, Arvidson, A, Badelek, B, Ballintijn, M K, Bardin, G, ...
A re-evaluation of the Gottfried sum (1994)
Arneodo, M, Arvidson, A, Badelek, B, Ballintijn, M K, Baum, G, Beaufays, J, ...
A modulated mirror for atomic interferometry (1994)
Henkel, C., Steane, A., Kaiser, R., Dalibard, J.
A novel atomic beam splitter, using reflection of atoms off an evanescent light wave, is investigated theoretically. The intensity or frequency of the light is modulated in order to create sidebands...
Kaiser, R., Fidorra, F., Trommer, D., Malchow, S., Albrecht, P., Franke, D., ...
Polarization diversity heterodyne receiver PICs including a tunable 4-section DBR laser as a local oscillator have been successfully fabricated for the first time. PIC design and fabrication are...
Monolithically integrated heterodyne receivers based on InP (1994)
Heidrich, H., Fidorra, F., Hamacher, M., Kaiser, R., Li, K., Trommer, D., ...
Future OFDM communication systems demand the availability of high performance and low cost OEICs. The achievement of a completely integrated polarization diversity heterodyne receiver makes the...
Kaiser, R., Fidorra, F., Heidrich, H., Albrecht, P., Rehbein, W., Malchow, S., ...
For the first time we present the integration of a tunable buried four-section DBR-laser butt coupled to a directional coupler based on semi-insulating strip loaded (InGaAsP/InP):Fe waveguides by...
Monolithically integrated polarisation diversity heterodyne receivers on GaInAsP/InP (1994)
Kaiser, R., Trommer, D., Fidorra, F., Heidrich, H., Malchow, S., Franke, D., ...
Polarisation diversity heterodyne receiver OEICs including a tunable four-section DBR laser as a focal oscillator have been successfully fabricated for the first time. OEIC design and fabrication are...
A modulated mirror for atomic interferometry (1994)
Henkel, C., Steane, A., Kaiser, R., Dalibard, J.
A novel atomic beam splitter, using reflection of atoms off an evanescent light wave, is investigated theoretically. The intensity or frequency of the light is modulated in order to create sidebands...
A modulated mirror for atomic interferometry (1994)
Henkel, C., Steane, A., Kaiser, R., Dalibard, J.
A novel atomic beam splitter, using reflection of atoms off an evanescent light wave, is investigated theoretically. The intensity or frequency of the light is modulated in order to create sidebands...
Measurement of the polarisation of a high-energy muon beam (1993)
Adeva, B, Ahmad, S, Arvidson, A, Badelek, B, Ballintijn, M K, Bardin, G, ...
Combined analysis of world data on nucleon spin structure functions (1993)
Adeva, B, Ahmad, S, Arvidson, A, Badelek, B, Ballintijn, M K, Bardin, G, ...
A re-evaluation of F$_{2}^{n}$/F$_{2}^{p}$ and F$_{2}^{p}$-F$_{2}^{n}$ (1993)
Arneodo, M, Arvidson, A, Badelek, B, Ballintijn, M K, Baum, G, Beaufays, J, ...
Quark and gluon distributions and $\alpha_{s}$ from nucleon structure functions at low $x$ (1993)
Arneodo, M, Arvidson, A, Badelek, B, Ballintijn, M K, Baum, G, Beaufays, J, ...
Measurement of the spin-dependent structure function g$_{1}$(x) of the deuteron (1993)
Adeva, B, Ahmad, S, Arvidson, A, Badelek, B, Ballintijn, M K, Bardin, G, ...
Photovoltaische Energieversorgung von Inselsystemen (1993)
Bopp, G., Dohlen, K. Von, Kaiser, R., Kiefer, K., Laukamp, H., Müller, J., ...
Schaffung der technischen Voraussetzungen für eine breitere Anwendung photovoltaischer Stromerzeugungsanlagen zur Versorgung von abgelegenen Gebäuden oder sonstigen Anlagen ohne Netzanschluß....
Photovoltaisch versorgte Geräte und Kleinsysteme (1993)
Jantsch, M., Kaiser, R., Laukamp, H., Pfanner, N., Roth, W., Sick, F., ...
Die Möglichkeit der dezentralen Nutzung der Sonnenenergie macht den Einsatz der Photovoltaik zur elektrischen Energieversorgung von Geräten im kleinen und mittleren Leistungsbereich sehr attraktiv....
Measurements of R$^{d}$ - R$^{p}$ and R$^{Ca}$ - R$^{C}$ in deep inelastic muon scattering (1992)
Amaudruz, P A, Arneodo, M, Arvidson, A, Badelek, B, Baum, G, Beaufays, J, ...
Proton and deuteron F$_{2}$ structure functions in deep inelastic muon scattering (1992)
Amaudruz, P A, Arneodo, M, Arvidson, A, Badelek, B, Baum, G, Beaufays, J, ...
Transverse momentum distributions for exclusive $\varrho^{0}$ muoproduction (1992)
Amaudruz, P A, Arneodo, M, Arvidson, A, Badelek, B, Baum, G, Beaufays, J, ...
Grundlagen zur Nutzung der Sonnenenergie (1992)
Die Diskussion um die Energieversorgung der Zukunft findet derzeit vor dem Horizont drohender globaler Klimaveränderungen statt, deren Ursachen zu einem erheblichen Teil in der Nutzung der fossilen...
The ratio F$^{n}_{2}$/F$^{p}_{2}$ in deep inelastic muon scattering (1991)
Amaudruz, P A, Arneodo, M, Arvidson, A, Badelek, B, Baum, G, Beaufays, J, ...
Precision measurement of structure function ratios for $^{6}$Li, $^{12}$C and $^{40}$Ca (1991)
Amaudruz, P A, Arneodo, M, Arvidson, A, Badelek, B, Baum, G, Beaufays, J, ...
The Gottfried sum from the ratio F$^{n}_{2}$/F$^{p}_{2}$ (1991)
Amaudruz, P A, Arneodo, M, Arvidson, A, Badelek, B, Baum, G, Beaufays, J, ...
Vansteenkiste, N., Gerz, C., Kaiser, R., Hollberg, L., Salomon, C., Aspect, A.
We describe a single mode LNA ring laser, which emits 60 mW at $1.083~\mu$m. Thanks to a high frequency F.M. saturated absorption technique, this laser is directly locked to an atomic line in a 4He...
RF and noise characterization of a monolithically integrated receiver on InP (1991)
Feiste, U., Kaiser, R., Mekonnen, G.G., Schramm, C., Trommer, D., Unterborsch, G.
A comprehensive characterization of an optoelectronic integrated circuit (OEIC) receiver that uses an optical waveguide is given. Bias dependent signal and noise measurements show that the...
Critical issues in the MBE growth of Ga0.47In0.53As for waveguide/PIN/JFET integration (1991)
Kunzel, H., Kaiser, R., Passenberg, W., Trommer, D., Unterborsch, G.
The critical issues for the optimization of the MBE grown layer sequence for the integration of an optical waveguide, a PIN photodiode and a junction field effect transistor (JFET) to form a...
Heydenreich, W., Jantsch, M., Kaiser, R., Laukamp, H., Pfanner, N., Roth, W., ...
In the low and medium power range photovoltaics is often a commercially competitive source of electric power. When units requiring small PV-generators are produced in large numbers, the demand for...
Schmidt, H., Jantsch, M., Kaiser, R., Roth, W., Stoll, M.
Five PV-Modules at different tilt angles were installed and connected to an automatic measurement equipment. The I/V-characteristics, temperatures and insolation values are continued to be measured...
Fabrication and characterization of a waveguide integrated balanced receiver OEIC on InP (1991)
Trommer, D., Feiste, U., Kaiser, R., Mekonnen, G.G., Passenberg, W., Reier, F., ...
The fabrication and detailed characterization of a waveguide integrated balanced detector OEIC is presented. A 3 dB bandwidth of 600 MHz in low impedance mode and a sensitivity of -27.5 dBm at 1...
Vansteenkiste, N., Gerz, C., Kaiser, R., Hollberg, L., Salomon, C., Aspect, A.
We describe a single mode LNA ring laser, which emits 60 mW at $1.083~\mu$m. Thanks to a high frequency F.M. saturated absorption technique, this laser is directly locked to an atomic line in a 4He...
Vansteenkiste, N., Gerz, C., Kaiser, R., Hollberg, L., Salomon, C., Aspect, A.
We describe a single mode LNA ring laser, which emits 60 mW at $1.083~\mu$m. Thanks to a high frequency F.M. saturated absorption technique, this laser is directly locked to an atomic line in a 4He...
Measurement of the neutron and the proton F$_{2}$ structure function ratio (1990)
Allasia, D, Amaudruz, P A, Arneodo, M, Arvidson, A, Badelek, B, Baum, G, ...
Shadowing in deep inelastic muon scattering from nuclear targets (1990)
Arneodo, M, Arvidson, A, Aubert, Jean-Jacques, Badelek, B, Schultze, K, Beaufays, J, ...
Waveguide integrated PINFET on InP for receiver OEICs (1990)
Trommer, D., Feiste, U., Hochheim, S., Kaiser, R., Passenberg, W., Reier, F., ...
The authors present a waveguide integrated PINFET as a building block for future receiver OEICs based on InP. The OEIC consists of a waveguide, a PIN-photodiode, a junction field effect transistor...
The optimization of waveguide-integrated photodiodes in vertical coupling (1990)
Kaiser, R., Morl, L., Rehbein, W.
The object of this work is to contribute in the improvement of the efficiency of electronic signal processing in photodetectors by achieving the optimal coupling between the waveguides and the...
Photovoltaische Energieversorgung von Geräten im kleinen und mittleren Leistungsbereich (1990)
Schmidt, H., Steinhüser, A., Heydenreich, W., Kaiser, R., Roth, W., Schmid, J.
Die Möglichkeit der dezentralen Nutzung der Sonnenenergie macht den Einsatz der Photovoltaik zur elektrischen Energieversorgung von Geräten im kleinen und mittleren Leistungsbereich sehr attraktiv....
Betriebsverhalten von photovoltaisch versorgten Systemen mit NiCd-Akkumulatoren (1990)
Kaiser, R., Pflüger, S., Roth, W., Stoll, M.
In photovoltaischen Energieversorgungen für Geräte im Bereich kleiner Leistungen kommen in vielen Fällen NiCd-Akkumulatoren zum Einsatz. Das Ladeverhalten dieser Speicher weist jedoch für die...
Rotavirus from Children of an Urban Settlement of Papua New Guinea (1990)
Bukenya, G. B., Kaiser, R., Nneka, N.
Rotavirus is a leading cause of severe dehydrating diarrhoea among children admitted to hospitals in Papua New Guinea. A community-based study in an urban settlement of Port Moresby, the capital of...
Metal speciation in flue gases, work place atmospheres and atmosphere particulate matter (1989)
Klockow, Dieter, Kaiser, R., Kossowski, J., Larjava, Kari, Reith, J., Siemens, Volker
Metal Speciation in the Environment. Turkey, Oct. 1989
Butt coupled photodiodes integrated with Y-branched optical waveguides on InP (1989)
Doldissen, W., Fiedler, F., Kaiser, R., Morl, L.
A pair of GaInAs photodiodes was integrated to the output waveguides of an optical Y-branch. Light was butt coupled to the photodetective zone which was formed by GaInAs LPE growth refilling deep...
Performance of photovoltaic supplied systems with NiCd battery storage (1989)
Kaiser, R., Roth, W., Stoll, M.
For small-scale photovoltaic supplied devices, NiCd rechargable batteries are commonly used for storage. The charging efficiency is a function of the state of charge, the charging current and the...
Presents different possibilities to produce monolithic integrated waveguide photodetectors based on InP which could be suitable for receiver OEICs in future optical communication systems.
Waveguide-integrated PIN photodiode on InP (1987)
Bornholdt, C., Doldissen, W., Fiedler, F., Kaiser, R., Kowalsky, W.
An InGaAs PIN photodiode was vertically integrated with an inverted optical rib waveguide in InGaAsP. Guided light was transferred to and absorbed by the photodiode at a rate of 0.07 dB/ mu m. For...
Microdissection and microcloning of the long arm of human chromosome 7 (1987)
Kaiser, R, Weber, J, Grzeschik, K-H, Edstrom, JE, Driesel, A, Zengerling, S, ...
DNA-fragments from the region of the long arm of human chromosome 7 to which the CF-locus has been mapped recently were isolated by microdissection and microcloning. We developed a new fixation...
Raman studies of the high-T§c compounds Nb§3(Al-Ge) and V§3Si. (1987)
Hackl, R., Kaiser, R., Mueller, A., Weber, W.
Journal of Physics F, 16(1986) S.1299-1306
Inelastic neutron and raman scattering on high T§c Nb§3(Al,Ge). (1985)
Mueller, P., Hackl, R., Kaiser, R., Nuecker, N., Mueller, A.
Internat.Conf.on the Materials and Mechanisms of Superconductivity, Ames, Iowa, May 29-31, 1985
Raman active phonons in A15 compounds with differing superconducting transition temperatures. (1982)
Schicktanz, S., Kaiser, R., Weber, W., Politis, C., Fluekiger, R., Bujard, P.
Physical Review B, 26(1982) S.4909
Raman spectra and superconductivity of various phases of a high-T(sub c) superconductor: NbN. (1979)
Kaiser, R., Spengler, W., Schicktanz, S., Politis, C.
physica status solidi(b), 87(1978) S.565-73
Adrian, H., Aker, E., Alberts, H.W., Braun, H., Dietrich, M., Ewert, D., ...
In: Progress Report. Teilinstitut Nukleare Festkoerperphysik des Instituts fuer Angewandte Kernphysik. 1.6.1978 - 31.5.1979 KfK-2881 (Oktober 79) S.84-139
Raman spectra and superconductivity of various phases of a high-T(sub c) superconductor: NbN. (1978)
Kaiser, R., Spengler, W., Schicktanz, S., Politis, C.
Physica status solidi(b), 87(1978) S.565-73
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Double-spin asymmetries in the cross section of electroproduction of rho /sup 0/ and phi mesons on the proton and deuteron are measured at the HERMES experiment. The photoabsorption asymmetry in...
Double-spin asymmetry in the cross section for exclusive rho0 production in lepton-proton scattering
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Arrington, J., Aschenauer, E.C., ...
Evidence for a positive longitudinal double-spin asymmetry (A/sub 1//sup rho /)=0.24+or-0.11/sub stat/+or-0.02/sub syst/ in the cross section for exclusive diffractive rho /sup 0/(770) vector-meson...
Evidence for quark-hadron duality in the proton spin asymmetry A1
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Aschenauer, E.C., ...
Spin-dependent lepton-nucleon scattering data have been used to investigate the validity of the concept of quark-hadron duality for the spin asymmetry A1. Longitudinally polarized positrons were...
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Double-spin asymmetries of semiinclusive cross sections for the production of identified pions and kaons have been measured in deep inelastic scattering of polarized positrons on a polarized...
Hadron formation in deep-inelastic positron scattering in a nuclear environment
Airapetian, A., Akopov, N., Akopov, Z., Akushevich, I., Amarian, T., Arrington, J., ...
The influence of the nuclear medium on the production of charged hadrons in semi-inclusive deep-inelastic scattering has been studied by the HERMES experiment at DESY using a 27.5 GeV positron beam....
Measurement of longitudinal spin transfer to Lambda hyperons in deep-inelastic lepton scattering
Airapetian, A., Akopov, N., Amarian, M., Aschenauer, E.C., Avakian, H., Avakian, R., ...
Spin transfer in deep-inelastic Lambda electroproduction has been studied with the HERMES detector using the 27.6 GeV polarized positron beam in the DESY HERA storage ring. For an average fractional...
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Single-spin asymmetries have been measured for semi-inclusive electroproduction of pi /sup +/, pi /sup -/, pi /sup 0/ and K/sup +/ mesons in deep-inelastic scattering off a longitudinally polarised...
Measurement of the beam-spin azimuthal asymmetry associated with deeply-virtual compton scattering
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Aschenauer, E.C., Avakian, H., ...
The beam spin asymmetry in hard electroproduction of photons was measured in the missing-mass (Mx) range upto 7 GeV. A nonzero asymmetry was observed in the exclusive domain for Mx [less-than or...
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Arrington, J., Aschenauer, E.C., ...
Measurements of the individual multiplicities of pi /sup +/, pi /sup -/ and pi /sup 0/ produced in the deep-inelastic scattering of 27.5 GeV positrons on hydrogen are presented. The average charged...
Q2 dependence of nuclear transparency for exclusive rho0 production
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Exclusive coherent and incoherent electroproduction of the rho(0) meson from H-1 and N-14 targets has been studied at the HERMES experiment as a function of coherence length (l(c)), corresponding to...
Q2 dependence of nuclear transparency for exclusive rho0 production
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Exclusive coherent and incoherent electroproduction of the rho(0) meson from H-1 and N-14 targets has been studied at the HERMES experiment as a function of coherence length (l(c)), corresponding to...
Quark fragmentation to pi(+/-), pi(0), K-+/-, p and (p)over-bar in the nuclear environment
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
The influence of the nuclear medium on lepto-production of hadrons was studied in the HERMES experiment at DESY in semi- inclusive deep-inelastic scattering of 27.6 GeV positrons off deuterium,...
Single-spin azimuthal asymmetry in exclusive electroproduction of pi /sup +/ mesons
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Aschenauer, E.C., Avakian, H., ...
A single-spin asymmetry in the distribution of exclusively produced pi /sup +/ mesons azimuthally around the virtual photon direction relative to the lepton scattering plane has been measured for the...
Airapetian, A, Akopov, N., Akopov, Z., Amarian, M, Aschenauer, E. C., Avakian, H., ...
A single-spin asymmetry in the azimuthal distribution of neutral pions relative to the lepton scattering plane has been measured for the first time in deep-inelastic scattering of positrons off...
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Aschenauer, E.C., ...
The Gerasimov-Drell-Hearn (GDH) sum rule connects the anomalous contribution to the magnetic moment of the target nucleus with an energy-weighted integral of the difference of the helicity- dependent...
The HERMES dual-radiator ring imaging Cherenkov detector
Akopov, N., Aschenauer, E.C., Bailey, K., Bernreuther, S., Bianchi, N., Capitani, G.P., ...
The construction and use of a dual radiator Ring Imaging Cherenkov (RICH) detector is described. This instrument was developed for the HERMES experiment at DESY which emphasises measurements of...
Perspectives for a next-generation electron-nucleon scattering facility in Europe
This paper discusses perspectives for a future fixed-target electron-nucleon scattering facility in Europe. Based on the intended measurements the requirements on accelerator, target and spectrometer...
Hard exclusive electroproduction of π+π-pairs
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Hard exclusive electroproduction of pi(+) pi(-) pairs off hydrogen and deuterium targets has been studied by the HERMES experiment at DESY Legendre moments (P-1) and (P-3) of the angular...
A silicon strip recoil detector for momentum measurement and tracking at HERMES
Reinecke, M., Gregor, I.M., Borissov, A., Hansen, K., Holler, Y., Hristova, I., ...
A recoil detector will be installed surrounding the internal gas target of the HERMES experiment at DESY. The recoil detector will improve the selection of exclusive events by a direct measurement of...
Evidence for a narrow |S|=1 baryon state at a mass of 1528 MeV in quasi-real photoproduction
Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Ammosov, V.V., Andrus, A., ...
Evidence for a narrow baryon state is found in quasi-real photoproduction on a deuterium target through the decay channel pK(S)(0) → ppi(+)pi(-). A peak is observed in the pK(S)(0) invariant mass...
Future Exclusive Measurements at HERMES 2006-06-12 - 2006-06-16
R. Kaiser, DESY Forschung Hochenergiephysik
Conference presentation
Estimation of the Business Cycle: a Modified Hodrick-Prescott Filter.
Hodrick-Prescott (HP) Filter of (most often, seasonally adjusted) quaterly series is analysed. Some of the criticism to the filter are adressed. It is seen that, while filtering strongly affects...
Seasonal Outliers in Time Series.
In the analysis of time series, it is frequent to classify perturbations as Additive Outliers (AO), Innovative Outliers (IO), Level Shift (LS) outliers or Transitory Change (TC) outliers. In this...
The paper details an application of programs TRAMO and SEATS to seasonal adjustment and trend-cycle estimation. The series considered is the German Retail Trade Turnover series, for which, when...
Notes on Time Series Analysis, ARIMA Models and Signal Extraction.
Present practice in applied time series work, mostly at economic policy or data producing agencies, relies heavily on using moving average filters to estimate unobserved components in time series,...
Short-Term and Long-Term Trends, Seasonal Adjustment, and the Business Cycles.
In this monograph, first, we analyze in detail some of the major limitations of the standard procedure to estimate business cycles with the Hodrick-Prescott (HP) filter. By incorporating time series...
Public health Impact of Outdoor and Traffic related Air Pollution
N. Künzli, R. Kaiser, S. Medina, M. Studnicka, O. Chanel, P. Filliger, ...
BackgroundAir pollution contributes to mortality and morbidity. We estimated the impact of outdoor (total) and traffic-related air pollution on public health in Austria, France, and Switzerland....
Overview of future GPD measurements 2008-10-06 - 2008-10-10
R. Kaiser, DESY Forschung Hochenergiephysik
Conference presentation
The HERMES Experiment 2008-06-25 - 2008-06-25
R. Kaiser, DESY Forschung Hochenergiephysik
Conference presentation
GPD Studies at HERMES 2008-02-18 - 2008-02-23
R. Kaiser, DESY Forschung Hochenergiephysik
Conference presentation
Recent DVCS Results from HERMES 2009-10-13 - 2009-10-17
R. Kaiser, DESY Forschung Hochenergiephysik
Conference presentation