Calibration of the ORTEC P type Ge γ-ray spectrometer

YANG Huili CHEN Jie

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Calibration of the ORTEC P type Ge γ-ray spectrometer

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- Calibration of the ORTEC P type Ge γ-ray spectrometer
- NUCLEAR TECHNIQUES Vol. 35, Issue 11, (2012)
- 作者机构：
  
  中国地震局地质研究所地震动力学国家重点实验室
- 作者简介：
- 基金信息：
  
  地震动力学国家重点实验室自主研究课题(编号LED2010A04);国家自然科学基金项目(编号41272195);国家国际科技合作计划项目(编号2008DFA20860)共同资助
- DOI：
  CLC： TL817.2
- Published：01 November 2012
- 稿件说明：
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[1]杨会丽,陈杰.ORTEC GEM70P4-95 P型高纯锗γ谱仪的标定[J].核技术,2012,35(11):854-858.

YANG Huili CHEN Jie. Calibration of the ORTEC P type Ge γ-ray spectrometer[J]. Nuclear techniques, 2012, 35(11): 854-858.
[1]杨会丽,陈杰.ORTEC GEM70P4-95 P型高纯锗γ谱仪的标定[J].核技术,2012,35(11):854-858. DOI：

YANG Huili CHEN Jie. Calibration of the ORTEC P type Ge γ-ray spectrometer[J]. Nuclear techniques, 2012, 35(11): 854-858. DOI：

摘要

高纯锗γ谱仪是释光/ESR测年中环境剂量率测量的重要方法之一

其标定（能量和效率刻度）是一项重要的基础性工作。利用中国剂量科学研究院提供的U/Th/Ra/K等标样

标定了本实验室的ORTECGEM70P4-95 P型高纯锗γ谱仪。选择不同类型的样品

进行了测量时间长短对实验结果影响的实验

结果显示在测量时间达到8 h即可满足要求;另外同时进行了高纯锗γ谱仪与ICP-MS比对测量

两种方法测量结果在误差范围内完全一致

说明标定结果是可靠和准确的

此仪器可以广泛应用于释光/ESR测年环境剂量率的测量中。

Abstract

Ge γ-ray spectrometer is an important tool for determining potassium

uranium and thorium contents in sediments.The results depend on accuracy of the calibration and the extent to which the measuring conditions resemble those adopted during calibration.Our ORTEC GEM70 P4-95 P type Ge γ-ray spectrometer was calibrated by measuring K

Th and U standards from Ionizing Radiation Division National Institute of Metrology.Different type samples were analyzed by both ICP-MASS and the Ge γ-ray spectrometer.The results show that 8 hours measured time are enough and the calibration is accurate.

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