2006年度CTBT大气颗粒物滤材样品的国际比对

2006 CTBT Intercomparison of Atmospheric Particle Filter Sample

摘要: 描述了参加2006年度全面禁止核试验条约（CTBT）筹委会临时技术秘书处（PTS）组织进行的国际放射性核素实验室间的滤材样品比对测量的全过程。使用相对效率为76%的HPGe γ谱仪系统测量和分析了比对样品，准确识别和计算了参考样品中的11种放射性核素的活度和活度浓度，利用95Nb与95Zr活度比推算的样品零时与参考值相差仅0.57 d。

Abstract: The paper describes the whole progress of 2006 proficiency test exercise organized by the Comprehensive Nuclear-Test-Ban Treaty organization (CTBTO). The atmospheric particle filter samples were measured by HPGe detector (relative detective efficiency is 76%), all the major radio-nuclides in reference sample were identified, and their activities and activity concentrations were calculated accurately. The zero time determined by the 95Nb and 95Zr activity ratio is in agreement with the reference value, the deviation is only 0.57 days.