Improving Spectroscopic Performance of a Coplanar-Anode High-Pressure Xenon Gamma-Ray Spectrometer

High-pressure xenon (HPXe) gas is a desirable radiation detection medium for homeland security applications because of its good inherent room-temperature energy resolution, potential for large, efficient devices, and stability over a broad temperature range. Past work in HPXe has produced large-diam...

Full description

Saved in:
Bibliographic Details
Published in2006 IEEE Nuclear Science Symposium Conference Record Vol. 2; pp. 1048 - 1051
Main Authors Kiff, S.D., Zhong He, Tepper, G.C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2006
Subjects
Anodes
Degradation
Energy resolution
Potential energy
Radiation detectors
Spectroscopy
Stability
Temperature distribution
Terrorism
Xenon
Online AccessGet full text

Cover

More Information
Summary:High-pressure xenon (HPXe) gas is a desirable radiation detection medium for homeland security applications because of its good inherent room-temperature energy resolution, potential for large, efficient devices, and stability over a broad temperature range. Past work in HPXe has produced large-diameter gridded ionization chambers with energy resolution at 662 keV between 3.5 and 4% FWHM. However, one major limitation of these detectors is resolution degradation due to Frisch grid microphonics. Improved energy resolution using a detector with coplanar anodes as an alternative to a Frisch grid is reported in this submission. It is expected that a coplanar anode design has the potential to provide competitive energy resolution with minimal degradation from microphonics. Experimental data is presented, including an analysis of interaction location effects on the energy spectrum. The HPXe gas is doped with a small amount of H 2 gas to improve charge transport, and the results are compared with Geant simulations.
ISBN:9781424405602
1424405602
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2006.356026