| γ射线探测器能量响应标定技术 |
| |
| 引用本文： | 李如荣,彭太平,张建华,王振通. γ射线探测器能量响应标定技术[J]. 原子能科学技术, 2006, 40(1): 88-91. DOI: 10.7538/yzk.2006.40.01.0088 |
| |
| 作者姓名： | 李如荣 彭太平 张建华 王振通 |
| |
| 作者单位： | 中国工程物理研究院 ;核物理与化学研究所，四川 ;绵阳 621900 |
| |
| 基金项目： | 中国工程物理研究院预先研究资助项目(4210303) |
| |
| 摘 要： | 叙述了γ射线探测器能量响应的标定原理和方法，即利用Compton散射将强60Co源的1.25MeVγ射线转换为0.36~1.02MeV(25°~90°)范围内任意能量的系列单能γ射线；采用辐射屏蔽技术和提高能量分辨率方法对γ射线探测器进行了该能区的能量响应标定；通过MCNP程序对探测器的能量沉积趋势和不同散射角散射γ射线的能量分布进行模拟计算。结果表明：该标定系统信噪比达到了20∶1左右，能量分辨率约为6%，0.66MeV的灵敏度与标准137Cs源直照标定的灵敏度基本一致。
|
| 关 键 词： | 能量响应 单能 能量分辨率 信噪比 |
| 文章编号： | 1000-6931（2006）01-0088-04 |
| 收稿时间： | 2004-03-01 |
| 修稿时间： | 2004-03-012004-07-16 |
Technique of Calibrating Energy Response of γ-ray Detector |
| |
| LI Ru-rong,PENG Tai-ping,ZHANG Jian-hua,WANG Zhen-tong. Technique of Calibrating Energy Response of γ-ray Detector[J]. Atomic Energy Science and Technology, 2006, 40(1): 88-91. DOI: 10.7538/yzk.2006.40.01.0088 |
| |
| Authors: | LI Ru-rong PENG Tai-ping ZHANG Jian-hua WANG Zhen-tong |
| |
| Affiliation: | China Academy of Engineering Physics， P.O.Box 919-212， Mianyang 621900， China |
| |
| Abstract: | The paper introduces a method and principle for calibrating energy response of γ-ray detector. The energy response may be obtained by means of transforming γ-ray from 60Co into a series of mono-energetic γ-ray in the range of 0.36～1.02 MeV， shielding radiation－interference and improving energy resolution. The energy distributions of scattered γ－ray at different angles and corresponding energy deposited in detector were simulated by MCNP code. The results show that the signal－to－noise of the system is about 20∶1， the energy resolution is about 6%，and the sensitivity of detector to 0.66 MeV γ－ray is in agreement with the one to the γ－ray from 137Cs. |
| |
| Keywords: | energy response mono-energy energy resolution signal-to-noise |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《原子能科学技术》浏览原始摘要信息 |
|
点击此处可从《原子能科学技术》下载全文 |
