摘要
分层γ扫描(SGS)测量分析方法是核废料与放射性废物定量测量的重要手段,被测样品层内放射性均匀分布是SGS分析方法的基本假设之一。本文采用蒙特卡罗方法模拟计算与实验验证相结合,研究了样品层内放射性非均匀分布对SGS测量分析误差的影响趋势和影响程度。研究表明,当实际样品的层内放射性分布偏离均匀假设时,会导致SGS分析结果偏离实际含量。这一结论与实际测量结果一致。
Segmented gamma scanning （SGS） is an important technique of quantitative analysis for nuclear scrap and radioactive waste. The first precondition is that the radio- active material and the media of object distribute in the specifically segment uniformly. In this paper, the effect of radial-heterogeneity was simulated. The result indicates that the SGS analysis will be deviate from its actual content if the actual radial distribution differs from the uniform assumptions. The measurement result supports the conclusion from simulation.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2012年第1期103-108,共6页
Atomic Energy Science and Technology
关键词
核废料
放射性废物
分层γ扫描
定量测量
径向非均匀性
nuclear scrap
radioactive waste
segmented gamma scanning
quantitativeanalysis
radial-heterogeneity
