碲锌镉(CZT)探测器应用于剂量率测量需要完善能谱-剂量转换函数G(E)的计算。CZT探测器的能谱具有明显的低能拖尾,导致直接蒙特卡罗模拟的能谱与实际差别较大,不能直接用于G(E)函数计算。前期研究通过指数衰减函数校正的方法在一定程度上描述了低能拖尾。本研究采用峰形拟合函数与蒙特卡罗模拟的不展宽能谱 The use of CZT detectors for dose rate measurement requires a refinement of the calculation of the energy spectrum - dose conversion function G (E). The energy spectrum of the CZT detector has obvious low-energy tailing, which leads to the fact that the energy spectrum of the direct Monte Carlo simulation is quite different from the actual one and can not be directly used in the G (E) function calculation. The previous study describes the low-energy tailing to a certain extent through the method of exponential decay function correction. In this study, the peak shape fitting function and Monte Carlo simulation of non-broadening spectrum