浏览全部资源
扫码关注微信
用活化法无损测定金属铀样品中238U的含量
Nondestructive determination of the 238U content in mental uranium sample by using the activation method
- 核技术 2016年39卷第8期 文章编号：080201
- 作者机构：
1.四川大学 原子核科学技术研究所 成都 610064
2.中国工程物理研究院 中子物理学重点实验室 绵阳 621900
- 作者简介：
[ "汪超, 男, 1992年出生, 2015年毕业于成都理工大学工程技术学院, 现为硕士研究生, 从事核技术及应用方向研究", "WANG Chao, male, born in 1992, graduated from the Engineering Technical College of Chengdu University of Technology in 2015, master student, major in nuclear technology and its application" ]
王攀, E-mail:656894018@qq.com WANG Pan, E-mail: 656894018@qq.com
- 基金信息：中国工程物理研究院中子物理学重点实验室项目(No.2014BA06)
DOI：10.11889/j.0253-3219.2016.hjs.39.080201
中图分类号： TL99收稿日期：2016-01-22，
修回日期：2016-04-01，
纸质出版日期：2016-08
- 稿件说明：
移动端阅览
汪超, 肖军, 王攀, 等. 用活化法无损测定金属铀样品中238U的含量[J]. 核技术, 2016,39(8):080201
Chao WANG, Jun XIAO, Pan WANG, et al. Nondestructive determination of the 238U content in mental uranium sample by using the activation method[J]. Nuclear techniques, 2016, 39(8): 080201
汪超, 肖军, 王攀, 等. 用活化法无损测定金属铀样品中238U的含量[J]. 核技术, 2016,39(8):080201 DOI： 10.11889/j.0253-3219.2016.hjs.39.080201.
Chao WANG, Jun XIAO, Pan WANG, et al. Nondestructive determination of the 238U content in mental uranium sample by using the activation method[J]. Nuclear techniques, 2016, 39(8): 080201 DOI： 10.11889/j.0253-3219.2016.hjs.39.080201.
摘要
238
U作为一种重要的裂变材料，其含量的准确测定在裂变产额数据测量中具有重要意义。在四川大学2.5 MeV质子静电加速器上，利用T（p
n）
3
He反应产生的483 keV单能中子照射金属铀样品，对照射后生成放射性核素
239
Np的特征γ射线进行测量，利用已知的
238
U（n
γ）俘获截面数据实现了对
238
U含量的准确测量。对影响测量结果准确性的因素做了细致分析，采用蒙特卡罗方法应用软件MCNPX（Monte Carlo N-ParticleeXtended）对中子的多次散射效应和中子注量衰减效应进行了修正，对γ射线在样品中的自吸收也进行了修正，修正后的实验结果是2.884 2 g金属铀含5.712 8×10
21
个
238
U原子，实验结果的不确定度是4.1%。
Abstract
Background:
2
As a kind of important fission material
the accurate quantification of
238
U is of great significance in the measurement of fission yield data.
Purpose:
2
The aim is to nondestructively measure the content of
238
U by using the activation method.
Methods:
2
Neutron of 483-keV produced by the reaction of T(p
n)3He induces
238
U occurring radiative capture reaction on the 2.5-MeV electrostatic accelerator of Sichuan University. The atomic number of
238
U in uranium samples is measured by using 278-keV gamma ray of
239
Np on the detector of high purity germanium (HPGe) and the data of capture cross section.
Results:
2
The deflections which were caused by multiple scattering and self-shielding of the target and sample in the experiment were corrected with MCNPX (Monte Carlo N-Particle eXtended). The result of the experiment is that the atomic number of
238
U in the 2.884 2-g metal uranium is 5.712 8×10
21
.
Conclusion:
2
The uncertainty of the experimental result is 4.1%. We can reduce the effect of multiple scattering effects and self-shielding by decreasing the thickness of the bottom lining
target tube
water layer and cladding material of the sample.
关键词
Keywords
references
冯 晶 , 杨 毅 , 刘 世龙 , . 0.57, 1.0和1.5 MeV中子诱发 235 U裂变时 95 Zr, 140 Ba和 147 Nd产额的绝对测量 . 核化学与放射化学 , 2010 . 32 ( 6 ): 322 - 325 . http://www.cqvip.com/Main/Detail.aspx?id=36184634 .
Jing FENG , Yi YANG , Shilong LIU , . 95 Zr, 140 Ba, and 147 Nd yields from 0.57, 1.0, and 1.5 MeV neutrons induced fission of 235 U . Journal of Nuclear and Radiochemistry , 2010 . 32 ( 6 ): 322 - 325 . http://www.cqvip.com/Main/Detail.aspx?id=36184634 .
原子能研究所裂变产额组 . 3 MeV中子诱发 238 U裂变的质量分布 . 核化学与放射化学 , 1985 . 7 ( 1 ): 1 - 5 .
Cumulative Yield Group, Institute of Atomic Energy . Distribution of fission yields in the 3 MeV neutron-induced fission of 238 U . Journal of Nuclear and Radiochemistry , 1985 . 7 ( 1 ): 1 - 5 .
刘 立坤 , 郭 冬发 , 黄 秋红 . 岩石矿物中铀钍的分析方法进展 . 中国无机分析化学 , 2012 . 2 ( 4 ): 10 - 14 . DOI: 10.3969/j.issn.2095-1035.2012.04.002 http://doi.org/10.3969/j.issn.2095-1035.2012.04.002 .
Likun LIU , Dongfa GUO , Qiuhong. HUANG . Review on the analytical methods for determination of uranium and thorium in rocks and minerals . Chinese Journal of Inorganic Analytical Chemistry , 2012 . 2 ( 4 ): 10 - 14 . DOI: 10.3969/j.issn.2095-1035.2012.04.002 http://doi.org/10.3969/j.issn.2095-1035.2012.04.002 .
刘 广山 , 黄 奕普 , 李 静 , . 不平衡铀系和钍系核素的γ谱测定 . 海洋学报 , 2003 . 25 ( 5 ): 66 - 74 . http://www.cnki.com.cn/Article/CJFDTOTAL-SEAC200305008.htm .
Guangshan LIU , Yipu HUANG , Jing LI , . Measurement of nuclides of uranium and thorium series of disequilibrium usingγ-spectroscopy . Acta Oceanologica Sinica , 2003 . 25 ( 5 ): 66 - 74 . http://www.cnki.com.cn/Article/CJFDTOTAL-SEAC200305008.htm .
T N Nathaniel , K Sudarshan , A Goswami , . Non-destructive assay technique for the determination of 238 U/ 232 Th ratio in the mixed oxides of uranium and thorium using prompt gamma-ray neutron activation . Journal of Radioanalytical and Nuclear Chemistry , 2009 . 279 ( 2 ): 481 - 485 . DOI: 10.1007/s10967-007-7314-4 http://doi.org/10.1007/s10967-007-7314-4 .
杨伟. 235 U/ 238 U同位素比值的非破坏性检测[D].广西:广西大学, 2013:9-14 http://cdmd.cnki.com.cn/Article/CDMD-10593-1013373581.htm
YANG Wei. The research of 235 U/ 238 U isotope ratios using non-destructive testing technology[D]. Guangxi:Guangxi University, 2013:9-14
E H Montoya , P A Mendoza , P S Bedregal . A combined method of neutron activation analysis and radiometric measurements for 234 U and 238 U determination in soil samples of low uranium concentration . Journal of Radioanalytical and Nuclear Chemistry , 2012 . 291 175 - 178 . DOI: 10.1007/s10967-011-1273-x http://doi.org/10.1007/s10967-011-1273-x .
华 艳 , 朱 祚缤 , 刘 艺琴 , . 高纯锗探测器的效率刻度 . 核电子学与探测技术 , 2014 . 34 ( 1 ): 86 - 88 . http://www.cnki.com.cn/Article/CJFDTOTAL-HERE201401021.htm .
Yan HUA , Zuobin ZHU , Yiqin LIU , . Calibration of HPGe detector efficiency . Nuclear Electronics & Detection Technology , 2014 . 34 ( 1 ): 86 - 88 . http://www.cnki.com.cn/Article/CJFDTOTAL-HERE201401021.htm .
孙 红娟 , 罗 小兵 , 李 初 , . 用金活化法测定加速器中子源中子注量及MCNP4C修正 . 核电子学与探测技术 , 2010 . 30 ( 2 ): 288 - 290 . http://www.cnki.com.cn/Article/CJFDTOTAL-HERE201002033.htm .
Hongjuan SUN , Xiaobing LUO , Chu LI , . The measurement of neutron flux using 197 Au neutron activation from static accelerator . Nuclear Electronics & Detection Technology , 2010 . 30 ( 2 ): 288 - 290 . http://www.cnki.com.cn/Article/CJFDTOTAL-HERE201002033.htm .
0
浏览量
27
下载量
1
CSCD
- 网络PDF下载
- Meta-XML下载
- BibTeX下载
- Endnote下载
- RefMan 下载
- NoteExpress下载
- NoteFirst下载
关联资源
相关文章
相关作者
相关机构
AI问答- 地址：上海市嘉罗公路2019号 邮编：201800
- 联系电话：021-39194977 Email：LHB@sinap.ac.cn
- 技术支持由北京北大方正电子有限公司提供 沪ICP备05005479号-1
京公网安备11010802024621 - 本系统建议在Chrome、 IE9+ 以上版本浏览器阅读本站内容，360浏览器请切换至极速模式
- Cookies帮助我们提供服务并提供个性化体验。使用本网站，即表示您同意我们使用Cookies
- 总访问量：881268 今日访问量：795
