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Proceedings Paper

High-pressure xenon gamma-ray spectrometers: recent developments and applications
Author(s): Gary C. Tepper; Robert L. Palmer; Jon R. Losee
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Paper Abstract

One of the most challenging and topical problems in modern gamma-ray spectroscopy is the need for thermally stable, high-resolution detectors. Temperature variations affect sensitive performance parameters in existing spectrometers such as leakage current in semiconductor photo-conductors and light output in scintillation-based spectrometers. For this reason, commercial gamma-ray detectors are restricted to operation over a very limited and often inconvenient temperature range. However, many important applications for radiation detectors including well logging, environmental surveillance, and gamma-ray astronomy require detectors that can provide high resolution spectroscopic measurements over a wide operating temperature range. Our research has demonstrated that highly purified and compressed xenon possesses a unique combination of properties that makes it particularly attractive as a thermally stable detection medium for high-resolution gamma-ray spectroscopy. Xenon- based detectors can exhibit energy resolutions of < 2 percent at 662 keV and are relatively insensitive to temperature variations. The state of the art in high- pressure xenon detector development is discussed including detector designs, current applications, existing limitations, and suggestions for future investigations.

Paper Details

Date Published: 19 October 1999
PDF: 10 pages
Proc. SPIE 3768, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics, (19 October 1999); doi: 10.1117/12.366590
Show Author Affiliations
Gary C. Tepper, Virginia Commonwealth Univ. (United States)
Robert L. Palmer, Univ. of California/San Diego (United States)
Jon R. Losee, Space and Naval Warfare Systems Ctr., San Diego (United States)

Published in SPIE Proceedings Vol. 3768:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics
Ralph B. James; Richard C. Schirato, Editor(s)

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