$W _{s}$ Values in Several Inorganic Scintillation Crystals for Gamma Rays
$W _{s}$ Values in Several Inorganic Scintillation Crystals for Gamma Rays
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几种伽马射线无机闪烁晶体的 $W _{s}$ 值
DOI：
10.1109/tns.2009.2037224
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发表时间：
2010
影响因子：
1.8
通讯作者：
E. Shibamura
中科院分区：
文献类型：
--
作者：
S. Sasaki;H. Tawara;Kiwamu Saito;E. Shibamura
根据晶体和光电倍增管 (PMT) 组合测量的光电子数，确定了 CsI(Tl)、CsI(Na)、PWO、BGO、YAP(Ce)、LSO(Ce)、GSO(Ce)、CWO 和 LaBr3(Ce) 晶体中 662 keV 伽马射线产生一个闪烁光子 Ws 所需的平均能量。通过使用蒙特卡罗模拟计算 PMT 光电阴极处的光子收集和转换效率，并通过实验确定光电阴极处的光子到光电子的转换效率，获得闪烁光子的数量。本研究中确定的 CsI(Tl) 的 Ws 与最近提出的理论值非常吻合。
The average energy required to produce one scintillation photon Ws was determined for 662 keV gamma rays in CsI(Tl), CsI(Na), PWO, BGO, YAP(Ce), LSO(Ce), GSO(Ce), CWO, and LaBr3(Ce) crystals from the number of photoelectrons measured by a combination of a crystal and a photomultiplier tube (PMT). The number of scintillation photons was obtained by calculating the collection and conversion efficiency of photons at the PMT photocathode using Monte Carlo simulations and by determining experimentally the photon-to-photoelectron conversion efficiency at the photocathode. Ws determined for CsI(Tl) in the present study agrees well with the theoretical value presented recently.