摘要
为更有效地监测、评估核事故后放射性核素泄漏水平和泄漏范围,探讨了一种非采样式大气放射性监测方法,并评估了该测量方式的可行性与探测下限。针对空气分布范围过大的特点,该方法首先利用MC方法模拟了小范围空气内的探测器响应,然后利用理论分析得到的探测器响应随空气范围变化关系,将MC计算结果外推到无限大空间范围内。结果表明:将探测器直接对着空气测量是可行的。该测量方式能够用来鉴别核素,具有测量范围大,探测下限低的特点。
Toassess radiation level and release range of radionuclide in accidentseffectively , a non-sampling at-mospheric radioactivity monitoring method was discussed in the paper ,andits feasibility and minimum detectable limit were evaluated .To solve the problem of wide distribution of air , detector responses in small range were simulated with Monte Carlo method , and then simulation results were extended to infinite space according to the relationship between detector response and atmosphere distribution .The resultsindicate that this measurement method is feasible and can be used to identify radionuclide .Because of huge detection range ,very low minimum detectable limit will be achieved .
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2014年第4期480-484,共5页
Nuclear Electronics & Detection Technology
