Title :
High pressure xenon GPSC/LAAPD for hard x-ray spectrometry
Author :
Covita, D.S. ; Lopes, J.A.M. ; Szawlowski, M. ; dos Santos, J.M.F.
Author_Institution :
Dept. de Fisica, Coimbra Univ., Portugal
Abstract :
The performance of a xenon high-pressure gas proportional scintillation counter (GPSC) instrumented with a large area avalanche photodiode (LAAPD) has been investigated for hard x-ray spectrometry. The LAAPD was placed in direct contact with the filling gas and filling-pressures in the 2- to 6-bar range have been studied. The obtained results arc similar to those achieved with large-volume GPSCs at atmospheric pressure. Energy resolutions of 8.2%, 4.3% and 2.8% were obtained for photon energies of 5.9-, 22.1- and 59.6-keV, respectively. Additionally, the smaller scale of this GPSC allows increasing the detector count-rate capability by at least one order of magnitude.
Keywords :
X-ray detection; X-ray spectroscopy; gas scintillation detectors; proportional counters; xenon; 22.1 keV; 5.9 eV; 59.6 keV; Xe; detector count-rate capability; filling gas; filling-pressures; hard x-ray spectrometry; high pressure Xe GPSC/LAAPD; large area avalanche photodiode; Avalanche photodiodes; Energy resolution; Filling; Instruments; Radiation detectors; Solid scintillation detectors; Spectroscopy; Telephony; X-ray detectors; Xenon;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
Conference_Location :
Portland, OR, USA
Print_ISBN :
0-7803-8257-9
DOI :
10.1109/NSSMIC.2003.1352130
