Study of the interference between samarium and uranium in non-destructive neutron activation analysis

Xizhang Feng; Shihua Luo; Zhenlan Zhao; Yinghuan Guo; Zhongxiang Huang; Ruiying Yang; Yong Jiang; Yuanji Zhang; Yinan Yang

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Study of the interference between samarium and uranium in non-destructive neutron activation analysis

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- Study of the interference between samarium and uranium in non-destructive neutron activation analysis
- Nuclear Techniques Vol. 07, Issue 5, (1984)
- 作者机构：
  
  中国科学院高能物理研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：20 July 1982，
  
  Published：1984-10
- 稿件说明：
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Xizhang Feng, Shihua Luo, Zhenlan Zhao, et al. Study of the interference between samarium and uranium in non-destructive neutron activation analysis[J]. Nuclear techniques, 1984, 07(5): 59-60,26,76.
DOI：

Xizhang Feng, Shihua Luo, Zhenlan Zhao, et al. Study of the interference between samarium and uranium in non-destructive neutron activation analysis[J]. Nuclear techniques, 1984, 07(5): 59-60,26,76. DOI：

摘要

在钐与铀的不破坏中子活化分析中主要测量46.4小时

153

Sm的103.2keV

的光峰和56.4小时

239

Np的277.6keV

的光峰。但是，在

239

Np的衰变中，由于内转换还有较大的几率发射99.5与103.7keV的X射线（

239

Pu），它们与

239

Np的106.1keV

严重干扰钐的测量。用SCORPIO/SPECTRAN软件包中的

谱单峰分析程序分析由SCORPIO-3000计算机程控Ge（Li）

谱仪测得的经中子活化的纯铀的

（X）谱，在所得的结果中，103.7keV光峰不出现，106.1keV光峰也显著偏小。若

153

Sm与

239

Np同时存在，则103keV光峰仍不出现

[1]

或虽出现但不准确，均严重影响钐的测量。用本实验室设计的重峰分析程序

[2]

，可以尚好地得出103与106keV峰。我们另外采用了一个剥谱法，它有助于解决以上的干扰问题，得出比较准确的钐的结果。

Abstract

In presenta paper

the interference between Sm and U in non-destructive neutron activation analysis has been studied. When the radioactivities of

153

Sm and

239

Np are close to each other

the 103.2keV photopeak of

153

Sm and the 103.7keV photopeak of

239

Np (

239

Pu) do not appear correctly if the single-peak analysis is used. It seriously interfered the accurate measurement of Sm. The overlapping-peak-analysis program designed by our laboratory can be used to obtain the mixture of these two peaks. We use the stripping method. i. e. after stripping the spectrum of pure uranium

the mixed

spectrum of Sm and U go through the single-peak or overlapping-peak analysis. By this way

we can get the pure 103.2keV photopeak of

153

Sm quite accurately. The stripping method can be used to strip the contributions of all the fission products of uranium. This also is the one of its advantages. The stripping method may have other applications in non-destructive neutron activation analysis.

关键词

Keywords

references

冯锡璋等，中子活化分析方法的研究（未发表）。

徐元彪，重峰分析程序（未发表）。

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