High-pressure xenon gamma-ray spectrometers: recent developments and applications

Details High-pressure xenon gamma-ray spectrometers: recent developments and applications High-pressure xenon gamma-ray spectrometers: recent developments and applications

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3768..261t&link_type=abstract

Proc. SPIE Vol. 3768, p. 261-270, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics, Ralph B. James; Richard C. Schirato; Eds.

Physics

Scientific paper

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.

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