The Impact of Multiple-Site Interactions on the Energy Resolution of a High-Pressure Xenon Gamma-Ray Spectrometer

Conference · Fri Nov 30 04:00:00 EST 2007

DOI:https://doi.org/10.1109/NSSMIC.2007.4437193· OSTI ID:939356

Kiff, Scott D; He, Zhong

High-pressure xenon (HPXe) ionization chambers have generated interest as a radiation detection medium for purposes requiring good energy resolution, high detection efficiency, and uniform response over a broad temperature range, such as homeland security and well logging applications. These chambers generally exhibit a substantial degradation of the measured energy resolution relative to theoretical limits. This investigation studies the impact of the number of interaction sites in an event sequence on the measured energy resolution using a benchmarked simulation package. The prominence of single and multiple-site interactions is investigated in addition to the photopeak broadening due to each event class. A radial position-sensing technique developed for coplanar-anode HPXe chambers is shown to have benefit for only single-site events.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 939356
• Report Number(s): PNNL-SA-58160
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ENERGY RESOLUTION
GAMMA SPECTROMETERS
Geant
IONIZATION CHAMBERS
PERFORMANCE TESTING
XENON
coplanar anode
high-pressure xenon
multiple-site interactions
position sensing