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 :
Phys. Dept., Univ. of Coimbra, 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. Filling-pressures in the 2- to 6-atm range have been studied. The results obtained are 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 spectrometers; avalanche photodiodes; gas scintillation detectors; nuclear electronics; particle spectrometers; proportional counters; atmospheric pressure; detector count-rate capability; energy resolutions; filling-gas pressure; hard X-ray spectrometry; large area avalanche photodiode; photon energies; xenon high-pressure gas proportional scintillation counter; Avalanche photodiodes; Energy resolution; Helium; Instruments; Silicon; Solid scintillation detectors; Spectroscopy; X-ray detection; X-ray detectors; Xenon;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2004.832553
