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Title: A metastable xenon isotope detector for treaty verification
Authors: Lopes, J. A. M. 
Morgado, R. E. 
Conde, C. A. N. 
Keywords: Radioxenon; Multiparameter detection system; Treaty verification
Issue Date: 2003
Citation: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 501:2-3 (2003) 623-629
Abstract: A system to selectively detect and quantify the xenon metastable isotopes 131mXe, 133mXe, 133Xe, and 135Xe has been designed, fabricated, and tested. The system combines high-resolution electron and gamma-ray spectrometry with coincidence/anti-coincidence timing for signal selectivity and background rejection. By utilizing X-ray-fluorescence gating, backgrounds from other sources are expected to be reduced to the sub-becquerel level. Coincidence and anti-coincidence triggers are formed from the several individual detectors that comprise the system and used to identify K-shell conversion electrons and fluorescence X-rays from a 109Cd test source with good efficiencies and energy resolutions (20 keV for the low-energy electrons, ~1.2 keV for the fluorescence X-rays, respectively).
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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