运用Geant4模拟闪烁光纤辐照效率与光纤长度及射线能量的关系

Relationship between energy deposited efficiency and γ-ray energy or length of scintillation optical fiber based on Geant4 system

利用 Geant4 系统对闪烁光纤中的 γ粒子进行跟踪,模拟粒子与光纤的相互作用,给出粒子径迹,并计算出在闪烁光纤中的能量沉积,从而得到能量沉积效率与光纤长度及射线能量的关系,此工作对研究闪烁光纤的性质以及利用闪烁光纤进行实时成像有着重大的意义。

This article gives the method of tracing gamma ray in scintillation fiber, simulating the interaction between particles and fiber, drawing the track of particles and computing the energy deposition in fiber by numeric simulation of Geant4 system. We have got the result of relationship between the energy deposited efficiency and γ-ray energy or length of scintillation optical fiber. The work is very useful for studying the character of scintillation fiber and applying scintillation fiber to real-tune imaging.