The measurement of the half-life of <sup>151</sup>Sm by liquid scintillation counter

SHI Guozhu1; 2 HE Ming2 WANG Xianggao2 LI Chaoli2 WANG Wei2 HUANG Chuntang1; 2 ZHANG Dawei1; 2 WU Shaolei2 SHEN Hongtao2 LV Xiaoxia2 WU Shaoyong2 WU Weiming1 JIANG Shan2 1

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The measurement of the half-life of ¹⁵¹Sm by liquid scintillation counter

更新时间：2021-03-12

- The measurement of the half-life of ¹⁵¹Sm by liquid scintillation counter
- NUCLEAR TECHNIQUES Vol. 32, Issue 7, (2009)
- 作者机构：
  
  1. 广西大学物理科学与工程技术学院
  2. 中国原子能科学研究院核物理所
- 作者简介：
- 基金信息：
- DOI：
  CLC： O571.1
- Published：01 July 2009
- 稿件说明：
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[1]石国柱,何明,王祥高,李朝历,王伟,黄春堂,张大伟,吴绍雷,沈洪涛,吕晓霞,武绍勇,吴伟明,姜山.液闪法测定~(151)Sm的半衰期[J].核技术,2009,32(07):537-540.

SHI Guozhu1, 2 HE Ming2 WANG Xianggao2 LI Chaoli2 WANG Wei2 HUANG Chuntang1, 2 ZHANG Dawei1, et al. The measurement of the half-life of ¹⁵¹Sm by liquid scintillation counter[J]. Nuclear techniques, 2009, 32(7): 537-540.
[1]石国柱,何明,王祥高,李朝历,王伟,黄春堂,张大伟,吴绍雷,沈洪涛,吕晓霞,武绍勇,吴伟明,姜山.液闪法测定~(151)Sm的半衰期[J].核技术,2009,32(07):537-540. DOI：

SHI Guozhu1, 2 HE Ming2 WANG Xianggao2 LI Chaoli2 WANG Wei2 HUANG Chuntang1, 2 ZHANG Dawei1, et al. The measurement of the half-life of ¹⁵¹Sm by liquid scintillation counter[J]. Nuclear techniques, 2009, 32(7): 537-540. DOI：

摘要

采用液闪β放射性计数法（LSC）测量中国原子能科学研究院重水堆上辐照后样品中151Sm的活度

用表面热电离质谱（TIMS）和电感耦合等离子质谱仪（ICP-AES）法结合测得样品中151Sm的原子个数

计算得到151Sm半衰期。在LSC实验测量前的γ谱和β谱测量表明

干扰核素152Eu、154Eu、40K等对151Sm的LSC测量影响可忽略。用14C的效率示踪-液闪法测定151Sm的比活度为（603.3±15.1）Bq/mg

相对误差为2.5%

原子个数测量结果为2.769×1012个

求得151Sm半衰期为（96.7±2.8）a

相对误差为2.9%。

Abstract

A method to determine 151Sm activity by liquid scintillation counter(LSC) was described and the 151Sm half-life was obtained in this paper.The γ and β spectra of neutron-activated 151Sm samples revealed that effects of the interfering nuclides on the 151Sm LSC measurement were negligible.Activity of the 151Sm samples was determined by LSC through the efficiency tracing(ET).A 151Sm sample of specific activity of(603.3±15.1) Bq/mg was obtained in the original sample and its relative standard error was 2.5%.151Sm/150Sm ratio of(3.750±0.002)×10-3 was obtained in the original sample by TIMS and ICP-AES with the 151Sm sample of specific activity.Finally

the half-life of 151Sm of(96.7±2.8)a was obtained

with a relative standard error of 2.9%

which is more accurate than other measurements.

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The measurement of the half-life of 151Sm by liquid scintillation counter

DOI：

摘要

Abstract

关键词

Keywords

references

The measurement of the half-life of ¹⁵¹Sm by liquid scintillation counter