γ spectrometry analytical method of radionuclide

Yunhua QING; Pan LIU; Qishan ZHENG; Yan ZHANG; Lihua HUANG

doi:10.11889/j.0253-3219.2017.hjs.40.090502

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γ spectrometry analytical method of radionuclide

NUCLEAR PHYSICS, INTERDISCIPLINARY RESEARCH | 更新时间：2021-05-19

- γ spectrometry analytical method of radionuclide
- NUCLEAR TECHNIQUES Vol. 40, Issue 9, Article number: 090502(2017)
- 作者机构：
  
  福建省职业病与化学中毒预防控制中心福州 350000
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2017.hjs.40.090502
  CLC： TL12
- Received：20 February 2017，
  
  Revised：08 April 2017，
  
  Published：2017-09
- 稿件说明：
移动端阅览
Yunhua QING, Pan LIU, Qishan ZHENG, et al. γ spectrometry analytical method of radionuclide[J]. Nuclear techniques, 2017, 40(9): 090502
DOI：

Yunhua QING, Pan LIU, Qishan ZHENG, et al. γ spectrometry analytical method of radionuclide[J]. Nuclear techniques, 2017, 40(9): 090502 DOI： 10.11889/j.0253-3219.2017.hjs.40.090502.

摘要

在实验室仅存在混合刻度源条件下，探讨不同解谱方法对放射性核素活度估算的适用性。本文利用HPGe γ谱仪测量样品，并分别采用效率曲线法和相对比较法来分析样品中

241

Am、

Co、

137

Cs、

K核素活度。结果表明，若干扰核素对样品中待分析核素产生的影响可忽略，但对混合刻度源中相应的待分析核素影响较大时，经综合考虑，相对比较法所得结果优于效率曲线法；若干扰核素对样品中待分析核素产生的影响不可忽略，但对混合刻度源中相应的待分析核素影响不大时，与相对比较法相比，效率曲线法占优势。

Abstract

Background:

Currently

mixture calibration sources

generally used in laboratory for saving cost

are limited in spectrum analysis.

Purpose:

The aim is to study the suitability of two spectrum analysis methods under the condition of mixture calibration source.

Methods:

In this work

four radionuclides

241

137

and

were measured by HPGe γ spectrometry and analyzed with relative comparison and efficiency curve methods under the condition of the mixture calibration source.

Results:

Relative comparison method can not calculate the radioactive activity of test nuclide influenced by interference nuclide

if interference nuclide could be ignored in mixture calibration source.

Conclusion:

Relative comparison method has an advantage comparing with efficiency curve method

if interference nuclide has no effect on test nuclide included in sample

but has a great effect on test nuclide included in mixture calibration source. However

efficiency curve method has an advantage comparing with relative comparison method. If interference nuclide has a great effect on test nuclide included in sample

but no effect appears on test nuclide included in mixture calibration source.

关键词

Keywords

references

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