DEFECT ANALYSIS IN NATURAL QUARTZ FROM BRAZILIAN SITES FOR IONISING RADIATION DOSIMETRY (2006)
Guzzo, P. L., Khoury, H. J., Souza, C. P., Souza, A. M., Schwartz, M. O. E., Azevedo, W. M.
The impurity-related point defects and the dosimetry properties of quartz irradiated with gamma- and X-rays doses were investigated for natural crystals taken from different geologies. The specimens...
HIGHLY SENSITIVE THERMOLUMINESCENT CARBON DOPED NANOPOROUS ALUMINIUM OXIDE DETECTORS (2006)
De Azevedo, W. M., De Oliveira, G. B., Da Silva, E. F., Khoury, H. J., Oliveira De Jesus, E. F.
In this work we present the synthesis, characterisation and the thermoluminescence (TL) response of nanoporous carbon doped aluminium oxide Al2O3:C produced by anodic oxidation of aluminium in...
HIGHLY SENSITIVE THERMOLUMINESCENT CARBON DOPED NANOPOROUS ALUMINIUM OXIDE DETECTORS (2006)
De Azevedo, W. M., De Oliveira, G. B., Da Silva, E. F., Khoury, H. J., Oliveira De Jesus, E. F.
In this work we present the synthesis, characterisation and the thermoluminescence (TL) response of nanoporous carbon doped aluminium oxide Al2O3:C produced by anodic oxidation of aluminium in...
Evaluation of patient dose for mammography in Pernambuco, Brazil (2005)
Khoury, H. J., Barros, V. S., Lopes, C.
The aim of this study is to evaluate the incident air kerma (INAK) and the mean glandular dose (MGD) during mammography in Recife, North-east Brazil. The study was performed in three institutions: a...
The performance of commercial photodiodes for dosimetry in mammography (2005)
Batista, E., Khoury, H. J., Melo, F. A., Barros, V., Da Silva, E. F.
This paper reports the results of an investigation carried out to determine the suitability of using a commercially available photodiode for dosimetry in mammography thereby providing a low cost...
A silicon-polymer heterostructure for sensor applications (2002)
Laranjeira,J. M. G., Khoury,H. J., Azevedo,W. M. De, Vasconcelos,E. A. De, Silva Jr.,E. F. Da
We report the development and characterization of high quality polyaniline-silicon heterojunction diodes appropriated for use as gas and/or ionizing radiation sensors. Polyaniline thin films 40 nm...
Low Cost Silicon Photodiode for Electron Dosimetry (1999)
Khoury, H.J., Hazin, C.A., Mascarenhas, A.P., Da Silva, E.F.
The results are reported of an investigation carried out to determine the suitability of using a low cost commercially available silicon photodiode as a high energy electron dosemeter. Measurements...
Semiconductor Based Quality Control System for Dental Radiology (1999)
Melo, F.A., Khoury, H.J., Hazin, C.A., Lira, C.A.B.
An instrument with digital readout was designed and constructed to provide rapid, simple and non-invasive measurement of X ray dental equipment parameters. The instrument is capable of measuring the...
Khoury, H.J., Hazin, C.A., Lopes Filho, F.J.
In recent years, semiconductor detectors have found application in radiation dosimetry due to their high sensitivity and small dimensions. In previous papers the response of the common photodiode...
Alvarez-Romero, J.T., Khoury, H.J., Hazin, C.A., Austerlitz, C.
The angular response of the BPW-34 photodiode (Siemens) irradiated with 90Sr/90Y beta radiation was evaluated in terms of H'(0.07O). The detector was positioned at distances of 0.11m, 0.30m, and...