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用于加速器质谱测量的151Sm实验室参考标准的研制
Preparation of 151Sm calibration standards for AMS measurement
- 核技术 2016年39卷第7期 文章编号：070502
- 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：
[ "寅新艺,女,1978年出生,2007年于中国原子能科学研究院获博士学位,从事加速器质谱学研究", "YIN Xinyi, female, born in 1978, graduated from China Institute of Atomic Energy with a doctor's degree in 2007, engaged in accelerator mass spectrometry study" ]
姜山, E-mail:jiangs@ciae.ac.cn JIANG Shan, E-mail:jiangs@ciae.ac.cn
- 基金信息：国家自然科学基金资助(No.11205250)
DOI：10.11889/j.0253-3219.2016.hjs.39.070502
中图分类号： TL92;O572.21;O614.337收稿日期：2016-02-02，
修回日期：2016-03-16，
纸质出版日期：2016-07
- 稿件说明：
移动端阅览
寅新艺, 何明, 董克君, 等. 用于加速器质谱测量的151Sm实验室参考标准的研制[J]. 核技术, 2016,39(7):070502
Xinyi YIN, Ming HE, Kejun DONG, et al. Preparation of 151Sm calibration standards for AMS measurement[J]. Nuclear techniques, 2016, 39(7): 070502
寅新艺, 何明, 董克君, 等. 用于加速器质谱测量的151Sm实验室参考标准的研制[J]. 核技术, 2016,39(7):070502 DOI： 10.11889/j.0253-3219.2016.hjs.39.070502.
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:
2
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:
2
The aim is to develop a series of laboratory reference standards for
151
Sm AMS measurements.
Methods:
2
The long-lived radioactive nuclide
151
Sm was produced
via
neutron capture reaction of
150
Sm by the irradiation of 52.6-mg Sm
2
O
3
(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
2
O
3
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
Sm
2
O
3
(
154
Sm is enriched to 98.61%) to obtain three other standards.
Results:
2
The
151
Sm/
150
Sm ratio in the irradiated Sm
2
O
3
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:
2
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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