Preparation of <sup>151</sup>Sm calibration standards for AMS measurement

Xinyi YIN; Ming HE; Kejun DONG; Shan JIANG; Chunhua ZHANG; Jinsong ZHANG; Yun ZHENG

doi:10.11889/j.0253-3219.2016.hjs.39.070502

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Preparation of ¹⁵¹Sm calibration standards for AMS measurement

NUCLEAR PHYSICS, INTERDISCIPLINARY RESEARCH | 更新时间：2021-05-24

- Preparation of ¹⁵¹Sm calibration standards for AMS measurement
- NUCLEAR TECHNIQUES Vol. 39, Issue 7, Article number: 070502(2016)
- 作者机构：
  
  1.中国原子能科学研究院北京 102413;
  2.中国核动力研究设计院成都 610005
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China
- DOI：10.11889/j.0253-3219.2016.hjs.39.070502
  CLC： TL92;O572.21;O614.337
- Received：02 February 2016，
  
  Revised：16 March 2016，
  
  Published：2016-07
- 稿件说明：
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Xinyi YIN, Ming HE, Kejun DONG, et al. Preparation of ¹⁵¹Sm calibration standards for AMS measurement[J]. Nuclear techniques, 2016, 39(7): 070502
DOI：

Xinyi YIN, Ming HE, Kejun DONG, et al. Preparation of ¹⁵¹Sm calibration standards for AMS measurement[J]. Nuclear techniques, 2016, 39(7): 070502 DOI： 10.11889/j.0253-3219.2016.hjs.39.070502.

摘要

介绍了用于HI-13串列加速器质谱（Accelerator Mass Spectra

AMS）测量的

151

Sm实验室参考标准的研制。

151

Sm是长寿命放射性核素，自然界不存在。通过富集稳定同位素

150

Sm（n

γ）反应合成

151

Sm，并以热电离同位素质谱仪（Thermal Ionization Mass Spectrometry

TIMS）测得样品中同位素比

151

Sm/

150

Sm为3.75×10

-3

，相对不确定度为0.06%。然后加入稳定的同位素

154

Sm稀释，制得

151

Sm/

154

Sm比值分别为（9.25±0.08）×10

-7

、（8.87±0.08）×10

-8

、（8.08±0.08）×10

-9

的系列参考标准。

Abstract

Background:

The long-lived fission product

151

Sm plays an important role in environmental science

life science

nuclear data

etc.

It is interesting to establish a high precise and sensitivity measurement method with Accelerator Mass Spectra (AMS) and develop a series of standards of

151

Sm.

Purpose:

The aim is to develop a series of laboratory reference standards for

151

Sm AMS measurements.

Methods:

The long-lived radioactive nuclide

151

Sm was produced

via

neutron capture reaction of

150

Sm by the irradiation of 52.6-mg Sm

(with

150

Sm enriched to 87

.34%) in the Heavy Water Research Reactor (HWRR) at China Institute of Atomic Energy (CIAE). The

151

Sm/

150

Sm ratio in the irradiated Sm

sample was measured with Thermal Ionization Mass Spectrometry (TIMS) at the Nuclear Power Institute of China (NPIC). This standard

151

Sm sample was then diluted with the enriched

154

(

154

Sm is enriched to 98.61%) to obtain three other standards.

Results:

The

151

Sm/

150

Sm ratio in the irradiated Sm

sample is 3.75×10

-3

(the relative standard deviation is 0.06%) measured with TIMS. Three standards with

151

Sm/

154

Sm ratios of (9.25±0.08)×10

-7

(8.87±0.08)×10

-8

and (8.08±0.08)×10

-9

respectively

were prepared for the calibration in AMS measurement of

151

Sm. The concentrations of Sm in standard solution (I) and diluent solution were measured using isotopic dilution mass spectrometry.

Conclusion:

The measurement method of TIMS for isotope ratio of

151

Sm was established. A series of standards was prepared for the calibration in AMS measurement of

151

Sm.

关键词

Keywords

references

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Related Institution

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⁰

Preparation of 151Sm calibration standards for AMS measurement

DOI：10.11889/j.0253-3219.2016.hjs.39.070502

摘要

Abstract

关键词

Keywords

references

Preparation of ¹⁵¹Sm calibration standards for AMS measurement