Improvements in high purity radioxenon sample preparation and analysis

作     者：Klingberg, Franziska J. Biegalski, Steven R. 

作者机构：Univ Texas Austin Nucl Engn Teaching Lab Austin TX 78712 USA 

出 版 物：《JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY》 (放射分析与核化学杂志)

年 卷 期：2015年第304卷第3期

页      面：1145-1152页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0827[工学-核科学与技术] 0703[理学-化学] 

基　　金：U.S. DoD Defense Threat Reduction Agency [HDTRA11210009] 

主　　题：Neutron activation Quartz encapsulation Radioxenon beta-gamma coincidence 

摘      要：This paper describes the production and analysis of high purity radioxenon samples. The University of Texas 1.1 MW TRIGA research reactor is used for radioactive sample production via neutron activation. The reactor s facilities include a pneumatic system for precise irradiation of samples. In order to use the pneumatic facilities, gaseous samples have been encapsulated in quartz to fit into the polyethylene vials designed for the system. Enriched, stable, isotopically pure xenon gas is irradiated with neutrons in order to activate it to radioxenon isotopes, which are then measured with a beta-gamma coincidence system. The system enhancement and procedures to produce the radioxenon samples are described and examples of first of their kind measurements are shown for Xe-125, Xe-127, (129m) Xe, and Xe-137.