Backward-angle photoproduction of eta meson from protons at E_gamma = 1.6 - 2.4 GeV (2009)
Sumihama, M., Ahn, D. S., Ahn, J. K., Akimune, H., Asano, Y., Chang, W. C., ...
Differential cross sections for eta photoproduction off protons have been measured at E_gamma = 1.6 - 2.4 GeV in the backward direction. A bump structure has been observed above 2.0 GeV in the total...
Reduction of the incoherent $\gamma d \to \phi p n$ photoproduction near threshold (2009)
Chang, W. C., Miyabe, M., Nakano, T., Ahn, D. S., Ahn, J. K., Akimune, H., ...
We report measurements of differential cross sections and decay asymmetries of incoherent $\phi$-meson photoproduction from the deuteron at forward angles using linearly-polarized photons at...
Spectroscopy of 13B via the 13C(t,3He) reaction at 115 AMeV (2009)
Guess, C. J., Zegers, R. G. T., Brown, B. A., Austin, Sam M., Bazin, D., Caesar, C., ...
Gamow-Teller and dipole transitions to final states in 13B were studied via the 13C(t,3He) reaction at Et = 115 AMeV. Besides the strong Gamow-Teller transition to the 13B ground state, a weaker...
Gamow-Teller transitions to 64-Cu measured using the 64-Zn(t,3-He) reaction (2009)
Hitt, G. W., Zegers, R. G. T., Austin, Sam M., Bazin, D., Gade, A., Galaviz, D., ...
The 64-Zn(t,3-He) reaction has been studied using a secondary triton beam of 115 MeV/nucleon to extract the Gamow-Teller transition-strength distribution to 64-Cu. The results were compared with...
Near-threshold photoproduction of $\Lambda(1520)$ from protons and deuterons (2009)
Muramatsu, LEPS Collaboration: N., Chen, J. Y., Chang, W. C., Ahn, D. S., Ahn, J. K., Akimune, H., ...
Photoproduction of $\Lambda$(1520) with liquid hydrogen and deuterium targets was examined at photon energies below 2.4 GeV in the SPring-8 LEPS experiment. For the first time, the differential cross...
Direct proton decay of the isoscalar giant dipole resonance in 208Pb (2009)
Nayak, B. K., Garg, U., Koss, M., Li, T., Martis, E., Fujimura, H., ...
The excitation and subsequent proton decay of the isoscalar giant dipole resonance (ISGDR) in $^{208}$Pb have been investigated via the $^{208}$Pb($\alpha, \alpha^{\prime}p)^{207}$Tl reaction at 400...
$\beta$-Decay Half-Life of the $rp$-Process Waiting Point Nuclide $^{84}$Mo (2009)
Stoker, J. B., Mantica, P. F., Bazin, D., Becerril, A., Berryman, J. S., Crawford, H. L., ...
A half-life of 2.2 $\pm$ 0.2 s has been deduced for the ground-state $\beta$ decay of $^{84}$Mo, more than 1$\sigma$ shorter than the previously adopted value. $^{84}$Mo is an even-even N = Z nucleus...
Evidence of the \Theta^+ in the \gamma d \to K^+K^-pn reaction (2008)
Nakano, T., Muramatsu, N., Ahn, D. S., Ahn, J. K., Akimune, H., Asano, Y., ...
The \gamma d \to K^+K^-pn reaction has been studied to search for the evidence of the \Theta^+ by detecting K^+K^- pairs at forward angles. The Fermi-motion corrected nK^+ invariant mass distribution...
Gamow-Teller strengths in 24Na using the 24Mg(t,3He) reaction at 115 AMeV (2008)
Howard, M. E., Zegers, R. G. T., Austin, Sam M., Bazin, D., Brown, B. A., Cole, A. L., ...
Gamow-Teller transitions from 24Mg to 24Na were studied via the (t,3He) reaction at 115 AMeV using a secondary triton beam produced via fast fragmentation of 150 AMeV 16O ions. Compared to previous...
Anantaraman, N., Austin, Sam M., Brown, B. A., Crawley, G. M., Galonsky, A., Zegers, R. G. T., ...
Background: The strength of electron capture for medium mass nuclei has a significant effect on the evolution of supernovae. There is insufficient knowledge of these strengths and very little data...
Zegers, R. G. T., Meharchand, R., Adachi, T., Austin, Sam M., Brown, B. A., Fujita, Y., ...
The 24Mg(3He,t)24Al reaction has been studied at E(3He)=420 MeV. An energy resolution of 35 keV was achieved. Gamow-Teller strengths to discrete levels in 24Al are extracted by using a recently...
Frekers, D., Rakers, S., Adachi, T., Baumer, C., Botha, N.T., ...
(3He, t) measurements on the double β-decay (ββ) nucleus 48Ca have been performed at RCNP (Osaka, Japan) to determine Gamow-Teller (GT−) transitions to the nucleus 48Sc, which represents the...
Zegers, R. G. T., Brown, E. F., Akimune, H., Austin, Sam M., Brown, B. A., ...
The Gamow-Teller strength for the transition from the ground state of 13C to the T=1/2, J^pi=3/2- excited state at 3.51 MeV in 13N is extracted via the 13C(3He,t) reaction at 420 MeV. In contrast to...
Backward-angle photoproduction of $\pi^0$ mesons on the proton at $E_\gamma$ = 1.5--2.4 GeV (2007)
Sumihama, M., Ahn, J. K., Akimune, H., Asano, Y., Chang, W. C., Daté, S., ...
Differential cross sections and photon beam asymmetries for $\pi^0$ photoproduction have been measured at $E_\gamma$ = 1.5--2.4 GeV and at the $\pi^0$ scattering angles, --1 $
On the extraction of weak transition strengths via the (3He,t) reaction at 420 MeV (2007)
Zegers, R. G. T, Adachi, T., Akimune, H., Austin, Sam M., Brown, B. A., ...
Differential cross sections for transitions of known weak strength were measured with the (3He,t) reaction at 420 MeV on targets of 12C, 13C, 18O, 26Mg, 58Ni, 60Ni, 90Zr, 118Sn, 120Sn and 208Pb....
Forward coherent $\phi$-meson photoproduction from deuterons near threshold (2007)
Chang, W. C., Horie, K., Shimizu, S., Miyabe, M., Ahn, D. S., Ahn, J. K., ...
Differential cross sections and decay asymmetries for coherent $\phi$-meson photoproduction from deuterons were measured for the first time at forward angles using linearly polarized photons at...
Frekers, D., Rakers, S., Adachi, T., Baeumer, C., Botha, N. T., ...
High-resolution (He-3,t) measurements on the double beta-decay (beta beta) nucleus Ca-48 have been performed at RCNP (Osaka, Japan) to determine Gamow-Teller (GT(-)) transitions to the nucleus Sc-48,...
De-excitation gamma-rays from the s-hole state in 15N associated with proton decay in 16O (2006)
Kobayashi, K., Akimune, H., Ejiri, H., Fujimura, H., Fujiwara, M., Hara, K., ...
We have measured de-excitation gamma-rays from the s-hole state in 15N produced via the 16O(p,2p)15N reaction in relation to the study of the nucleon decay and the neutrino neutral-current...
Cole, A. L., Akimune, H., Austin, Sam M., Bazin, D., Berg, G. P. A., ...
Electron capture and beta decay play important roles in the evolution of pre-supernovae stars and their eventual core collapse. These rates are normally predicted through shell-model calculations....
Kohri, H., Ahn, D. S., Ahn, J. K., Akimune, H., Asano, Y., Chang, W. C., ...
Differential cross sections and photon beam asymmetries have been measured for the gamma n -> K+ Sigma- and gamma p -> K+ Sigma0 reactions separately using liquid deuterium and hydrogen targets with...
The (t,3He) and (3He,t) reactions as probes of Gamow-Teller strength (2005)
Zegers, R. G. T., Akimune, H., Austin, Sam M., Bazin, D., Berg, G. P. A., ...
Charge-exchange reactions are an important tool for determining weak-interaction rates. They provide stringent tests for nuclear structure models necessary for modeling astrophysical environments...
Diffractive $\phi$-meson photoproduction on proton near threshold (2005)
Mibe, T., Chang, W. C., Nakano, T., Ahn, D. S., Ahn, J. K., Akimune, H., ...
Photoproduction of $\phi$-meson on protons was studied by means of linearly polarized photons at forward angles in the low-energy region from threshold to $E_{\gamma}$= 2.37 GeV. The differential...
phi photo-production from Li, C, Al, and Cu nuclei at Egamma=1.5 - 2.4 GeV (2004)
Ishikawa, T., Ahn, D. S., Ahn, J. K., Akimune, H., Chang, W. C., Date, S., ...
The photo-production of $\phi$ mesons from Li, C, Al, and Cu at forward angles has been measured at $E_gamma$=1.5--2.4 GeV. The number of events for incoherent phi photo-production is found to have a...
Gamow-Teller transitions from $^{58}$Ni to discrete states of $^{58}$Cu (2002)
Fujita, Y., Fujita, H., Adachi, T., Berg, G.P.A., Caurier, E., Fujimura, H., ...
Gamow-Teller transitions from $^{58}$Ni to discrete states of $^{58}$Cu (2002)
Fujita, Y., Fujita, H., Adachi, T., Berg, G.P.A., Caurier, E., Fujimura, H., ...
Observation of the isovector giant monopole resonances in the (He-3,t) reaction (2001)
Zegers, R.G.T., Van Den Berg, A.M., Brandenburg, S., Fleurot, F.R.R., Fujiwara, M., Guillot, J., ...
Excitation of the isovector giant monopole resonances via the $^{nat}$Pb($^3$He,tp) reaction (2001)
Zegers, R.G.T., Van Den Berg, A.M., Brandenburg, S., Fujiwara, M., Guillot, J., Harakeh, M.N., ...
Observation of the isovector giant monopole resonances in the (He-3,t) reaction (2001)
Zegers, R.G.T., Van Den Berg, A.M., Brandenburg, S., Fleurot, F.R.R., Fujiwara, M., Guillot, J., ...
Excitation of the isovector giant monopole resonances via the $^{nat}$Pb($^3$He,tp) reaction (2001)
Zegers, R.G.T., Van Den Berg, A.M., Brandenburg, S., Fujiwara, M., Guillot, J., Harakeh, M.N., ...
Fujiwara, M., Akimune, H., Cribier, M., Daito, I., Ejiri, H., ...
Discrete Gamow-Teller (GT) transitions, 176Yb-->176Lu at low excitation energies have been measured via the (3He,t) reaction at 450 MeV and at 0 degrees. For 176Yb, two low-lying states are observed,...
Search for isovector giant monopole resonances via the Pb(He-3,tp)reaction (2000)
Zegers, R.G.T., Van Den Berg, A.M., Brandenburg, S., Fleurot, F.R.R., Fujiwara, M., Guillot, J., ...
The Pb-nat(He-3, tp) reaction at E(He-3) = 177 MeV was studied to identify 2hw isovector monopole strength in Bi isotopes. Monopole strength was found in the region -45 < Q < -30 MeV in the...
Search for isovector giant monopole resonances via the Pb(He-3,tp)reaction (2000)
Zegers, R.G.T., Van Den Berg, A.M., Brandenburg, S., Fleurot, F.R.R., Fujiwara, M., Guillot, J., ...
The Pb-nat(He-3, tp) reaction at E(He-3) = 177 MeV was studied to identify 2hw isovector monopole strength in Bi isotopes. Monopole strength was found in the region -45 < Q < -30 MeV in the...