A metastable xenon isotope detector for treaty verification

• Author(s): Lopes, J. A. M. ; Morgado, R. E. ; Conde, C. A. N.
• Date: 2003
• Persistent ID: http://hdl.handle.net/10316/4482
• Origin: Estudo Geral - Universidade de Coimbra
• Subject(s): Radioxenon; Multiparameter detection system; Treaty verification
• Document Type: Article
• Language: English

Description

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). http://www.sciencedirect.com/science/article/B6TJM-482YFKD-Y/1/5a2cf30de703bb07296f1ead7aa1f641