[1]吴冰,宋玉收,谢肇阳.塑料闪烁体探测器衰减长度特性的蒙特卡罗模拟研究[J].应用科技,2018,45(06):80-85.[doi:10.11991/yykj.201803003]
 WU Bing,SONG Yushou,XIE Zhaoyang.Monte Carlo simulation on the attenuation length features of the plastic scintillator[J].Applied science and technology,2018,45(06):80-85.[doi:10.11991/yykj.201803003]
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塑料闪烁体探测器衰减长度特性的蒙特卡罗模拟研究(/HTML)
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《应用科技》[ISSN:1009-671X/CN:23-1191/U]

卷:
第45卷
期数:
2018年06期
页码:
80-85
栏目:
核科学技术与应用
出版日期:
2018-11-05

文章信息/Info

Title:
Monte Carlo simulation on the attenuation length features of the plastic scintillator
作者:
吴冰 宋玉收 谢肇阳
哈尔滨工程大学 核安全与仿真技术国防重点学科实验室, 黑龙江 哈尔滨 150001
Author(s):
WU Bing SONG Yushou XIE Zhaoyang
Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin 150001, China
关键词:
塑料闪烁体衰减长度蒙特卡罗算法控制变量法区间细分法光学面类型截面积表面粗糙度
Keywords:
plastic scintillatorattenuation lengthMonte Carlocontrol variable methodinterval subdivision methodoptical surface typecross-sectional areasurface roughness
分类号:
TL82
DOI:
10.11991/yykj.201803003
文献标志码:
A
摘要:
塑料闪烁体中的光衰减常被用来进行定位和修正信号的大小,对衰减规律的认识关系到一些物理量的测量精度。借助蒙特卡洛算法,系统研究塑料闪烁体衰减长度的影响因素及其影响方式。结合控制变量法,对塑料闪烁体的光学面类型、截面积、反射材料、表面粗糙程度这4类影响因素,逐一进行模拟测量和数据分析,进而得到衰减长度随该因素变化的趋势。然后,创新性的采用区间细分法,将塑料闪烁体按距离划分为若干个等距区间后,比较各区间的衰减长度的分布特性,总结区间细分法衰减长度的一般规律。结果表明,在其他条件相同时,背面涂层的抛光光学面的光收集效果最好,衰减长度随截面积、反射材料系数、表面粗糙度的增大而减小。同时,衰减长度是在闪烁体区间位置方向上不断变化的,并且衰减规律不是简单的指数规律,而是复合型的衰减规律。该模拟研究对塑料闪烁体探测器的实验设计具有较高的参考价值。
Abstract:
The optical attenuation of the plastic scintillator is usually used for positioning and correcting the intensity of signal, and the cognition on the attenuation law is related to the measurement precision of some physical quantity. By Monte Carlo method, the influencing factor and influencing mode of the attenuation length of plastic scintillator was researched systematically. Combining with the control variable method, four types of influencing factors of the optical surface type, cross-sectional area, reflective material and surface roughness of the plastic scintillator were simulated and analyzed one by one, and the tendency of attenuation length changing with the factor was obtained. Then, using the novel interval subdivision method, the plastic scintillator was divided into several equidistant intervals according to the distance. The distribution characteristics of the attenuation length in each interval were compared, and the general law of the attenuation length in the interval subdivision method was summarized. The results show that polished back painted polygon has the best light collection efficiency under the same other conditions, and the attenuation length decreases with the increase of cross-sectional area, reflectance of the reflecting material, and surface roughness. At the same time, the attenuation length varies continuously in the direction of the scintillator interval, and the attenuation law is not a simple exponential law, it is the attenuation law of a compound type. This simulation study has a high reference value for the experimental design of plastic scintillator detectors.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-03-06。
基金项目:中央高校基本科研业务费专项项目(HEUCF171504)
作者简介:吴冰(1992-),女,硕士研究生;宋玉收(1980-),男,副教授
通讯作者:宋玉收(1980-),E-mail:songyushou80@163.com
更新日期/Last Update: 2018-11-02