Study of inactive layer uniformity and charge collection efficiency of a p-type point-contact germanium detector
Study of inactive layer uniformity and charge collection efficiency of a p-type point-contact germanium detector
复制标题
p型点接触锗探测器非活性层均匀性和电荷收集效率研究
DOI：
10.1016/j.apradiso.2017.05.023
复制
发表时间：
2017-09-01
影响因子：
1.6
通讯作者：
Zhao, W.
中科院分区：
文献类型：
--
作者：
Ma, J. L.;Yue, Q.;Zhao, W.
研究了1 kg质量p型点接触锗探测器表面非活性层的特性。测量了非活性层的厚度及其在顶部和侧面的均匀性。根据蒙特卡罗模拟，建立了电荷收集效率函数来描述该非活性层内沿深度的电荷收集能力。在18 keV以下的能量范围内，基于电荷收集效率函数模拟得到的Co-57、Ba-135、Cs-137和Co-60的表面、体谱和总谱与实验结果吻合较好。
The characteristics of the surface inactive layer of a 1-kg-mass p-type point-contact germanium detector were studied. The thickness of the inactive layer and its uniformity on the top and lateral surfaces were measured. A charge collection efficiency function was developed according to the Monte Carlo simulation to describe the charge collection capacity along the depth within this inactive layer. In the energy range below 18 keV, the surface, bulk, and total spectra of Co-57, Ba-135, Cs-137, and Co-60 from simulations based on the charge collection efficiency function were well consistent with those from experiments.