Analysis of scintillation light intensity by microscopic radiation transport calculation and Förster quenching model.

Analysis of scintillation light intensity by microscopic radiation transport calculation and Förster quenching model.
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DOI:
10.1371/journal.pone.0202011
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发表时间:
2018
期刊:
影响因子:
3.7
通讯作者:
Sato T
Sato T
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ogawa T;Yamaki T;Sato T

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基于径迹结构模拟程序和Förster效应,建立了考虑猝灭效应的塑料闪烁体闪烁光产额计算模型。利用径迹结构模拟程序,模拟了NE-102 A闪烁体中电子、质子和重离子(~ 4 He ~ 81 Br)辐照下的能量沉积及其nm尺度空间排列.然后,获得了发射闪烁光的激发分子和耗散激发能量的激发分子的空间排列,以计算猝灭效应的强度。对来自激发分子的光发射进行积分以最终获得可观察的光产额。计算的光产额与早期的测量数据吻合得很好。此外,在低LET粒子入射的情况下,统计微剂量学模型可以代替轨道结构模拟代码再现光产额。
The scintillation light yield of plastic scintillator considering the quenching effect is reproduced by a calculation model based on a track-structure simulation code and the Förster effect. Energy deposition and its nm-scale spatial arrangement in the irradiation by electrons, protons, and heavy ions (4He to 81Br) in an NE-102A scintillator were simulated by a track-structure simulation code. The spatial arrangements of the excited molecules emitting scintillation light and those dissipating the excitation energy were then obtained to calculate the strength of the quenching effect. Light emission from the excited molecules was integrated to finally obtain the observable light yield. The calculated light yields are in good agreement with the earlier measurement data. Moreover, in the case of low-LET particle incidence, a statistical micro-dosimetric model can substitute the track-structure simulation code for reproducing the light yield.
DOI: 10.1039/df9500900014
发表时间: 1950-01-01
期刊: DISCUSSIONS OF THE FARADAY SOCIETY
影响因子: --
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