特定探测器计算模型符合方法研究.pdf

CNIC-01759 CAEP-0141 特定探测器计算模型符合方法研究 RESEARCH OF COINCIDENCE METHOD FOR CALCULATION MODEL OF THE SPECIFIC DETECTOR (In Chinese) 中 国 核 情 报 中 心 China Nuclear Information Centre 272 CNIC-01759 CAEP-0141 特定探测器计算模型符合方法研究 胡广春 刘素萍 龚 建 （中国工程物理研究院核物理与化学研究所，绵阳，621900 ） 摘 要 特定探测器探头的物理尺寸一般是已知的，但是生产商对一些 涉及到探测器性能的尺寸是必威体育官网网址的，诸如探测器的孔径、井深及死 层，由此给模拟计算带来了困难。文章通过蒙特卡罗方法建立了均 匀分布的面源以及源粒子各向同性运动的抽样方法；计算了 152Eu 面源与探测器在一定距离的 γ 射线响应能谱，使用计算结果与相同 条件下实验结果的相对效率符合法和能谱相似度符合法校验，并修 正探测器模型，从而为确定探测器的计算模型，进一步计算探测器 的效率和能谱计算奠定了基础。 152 关键词：蒙特卡罗方法 Eu 面源 相对效率符合 能谱相似度符合 273 Research of Coincidence Method for Calculation Model of the Specific Detector (In Chinese) HU Guangchun LIU Suping GONG Jian (Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, 621900) ABSTRACT The physical size of specific detector is known normally, but production business is classified for some sizes that is concerned with the property of detector, such as the well diameter, well depth of detector and dead region. The surface source of even distribution and the sampling method of source particle isotropy sport have been established with the method of Monte Carlo, and gamma ray respond spectral with the 152Eu surface source been calculated. The experiment have been performed under the same conditions. Calculation and experiment results are compared with