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14.8MeV中子诱发 238U裂变产物产额测量
Measurement of fission product yields on 238U induced by 14.8-MeV neutrons
- 核技术 2017年40卷第7期 文章编号：070201
- 作者机构：
四川大学 原子核科学技术研究所 辐射物理及技术教育部重点实验室 成都 610064
- 作者简介：
[ "孙琦, 女, 1993年出生, 2014年毕业于四川大学, 现为硕士研究生, 研究领域为辐射物理与医学物理", "SUN Qi, female, born in 1993, graduated from Sichuan University in 2014, master student, focusing on nuclear technology and applications" ]
罗小兵, E-mail:luoxb@scu.edu.cn LUO Xiaobing, E-mail: luoxb@scu.edu.cn
- 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(2014BA06)
DOI：10.11889/j.0253-3219.2017.hjs.40.070201
中图分类号： TL99收稿日期：2017-02-06，
修回日期：2017-04-11，
纸质出版日期：2017-07-10
- 稿件说明：
移动端阅览
孙琦, 罗小兵, 李宛琼, 等. 14.8MeV中子诱发 238U裂变产物产额测量[J]. 核技术, 2017,40(7):070201
Qi SUN, Xiaobing LUO, Wanqiong LI, et al. Measurement of fission product yields on 238U induced by 14.8-MeV neutrons[J]. Nuclear techniques, 2017, 40(7): 070201
孙琦, 罗小兵, 李宛琼, 等. 14.8MeV中子诱发 238U裂变产物产额测量[J]. 核技术, 2017,40(7):070201 DOI： 10.11889/j.0253-3219.2017.hjs.40.070201.
Qi SUN, Xiaobing LUO, Wanqiong LI, et al. Measurement of fission product yields on 238U induced by 14.8-MeV neutrons[J]. Nuclear techniques, 2017, 40(7): 070201 DOI： 10.11889/j.0253-3219.2017.hjs.40.070201.
摘要
裂变产物产额作为裂变过程的一个重要参数，其准确测量对有关裂变的很多方面都有重要意义。为了准确测量中子诱发
238
U裂变产物产额，利用中国工程物理研究院PD-300加速器上的T（d，n）
4
He反应，产生14.8MeV的中子，诱发
238
U裂变。辐照过程中，通过金硅面垒半导体探测器监测中子通量的变化。使用Al片作为监测片计算整个照射过程中样品的平均中子通量。辐照结束后，利用高纯锗（High-Purity Germanium
HPGe）探测器测得裂变产物特征γ射线计数，计算得到裂变产物的产额，使用MCNPX软件对中子的多次散射和自屏蔽效应进行修正，并通过计算得到样品和监测片的自吸收修正、中子通量波动因子。得到了
95
Zr、
127
Sb、
140
Ba、
147
Nd、
131
I、
103
Ru等长半衰期产物的累积产额值，并将结果与以前的文献值做了比对，研究结果有助于
238
U裂变产物产额的分析和评价。
Abstract
Background
2
The precise measurement of fission product yields is significant to many aspects of fission
because it's an important parameter in fission procedure.
Purpose
2
The aim is to measure fission product yields of
238
U induced by neutrons accurately.
Methods
2
The T(d
n)
4
He reaction on the PD-300 accelerator of China Academy of Engineering Physics was used to produce 14.8-MeV neutrons. The neutron flux was monitored by Au(Si) surface barrier semiconductor detector during the irradiation. The average neutron flux in the whole process of irradiation was calculated by Al. After the irradiation
the sample was placed in front of a high purity germanium detector to measure the characteristic gamma rays of the fission products. Then cumulative yields were calculated through the counts. The Monte Carlo program MCNPX was used to estimate the effects of multiple scattering and self-shielding of neutrons. The corrections of self-absorption and the neutron flux fluctuation were also calculated.
Results
2
The fission product yields for some long half-life radionuclide
i.e.
95
Zr
127
Sb
140
Ba
147
Nd
131
I
103
Ru were determined.
Conclusion
2
The results were compared with previous literature values
and they are helpful to the analysis and evaluation of
238
U yield.
关键词
Keywords
references
陈 永静 , 刘 挺进 , 孙 正军 , . 裂变产物产额数据的评价 . 原子核物理评论 , 2012 . 29 ( 2 ): 208 - 215 . DOI: 10.11804/NuclPhysRev.29.02.208 http://doi.org/10.11804/NuclPhysRev.29.02.208 .
Yongjing CHEN , Tingjin LIU , Zhengjun SUN , . Evaluation of fission yields . Nuclear Physics Review , 2012 . 29 ( 2 ): 208 - 215 . DOI: 10.11804/NuclPhysRev.29.02.208 http://doi.org/10.11804/NuclPhysRev.29.02.208 .
李 文新 , 孙 彤玉 , 郑 蔓艽 , . Ge(Li)探测器测定14.8MeV中子引起 238 U裂变中稀土核素的裂变产额 . 核化学与放射化学 , 1983 . 5 ( 2 ): 176 - 180 .
Wenxin LI , Tongyu SUN , Manjiao ZHENG , . Determination of the yields for the rare-earth nuclides from 14.8 MeV neutron fission of 238 U using Ge(Li) detector . Journal of Nuclear and Radiochemistry , 1983 . 5 ( 2 ): 176 - 180 .
原子能研究所裂变产额组 . 14.9 MeV中子诱发 238 U裂变时几个核素累计产额的绝对测量 . 核化学与放射化学 , 1980 . 2 ( 4 ): 193 - 198 . http://www.cnki.com.cn/Article/CJFDTotal-HXFS198004000.htm .
Institute of Atomic Energy . The absolute determination of cumulative yields of several nuclides from 14.9 MeV neutron-induced fission of 238 U . Journal of Nuclear and Radiochemistry , 1980 . 2 ( 4 ): 193 - 198 . http://www.cnki.com.cn/Article/CJFDTotal-HXFS198004000.htm .
J Laurec , A Adam , T D Bruyne , . Fission product yields of 233 U, 235 U, 238 U and 239 Pu in fields of thermal neutrons, fission neutrons and 14.7-MeV neutrons . Nuclear Data Sheets , 2010 . 111 ( 2 ): 2965 - 2980 . DOI: 10.1016/j.nds.2010.11.004 http://doi.org/10.1016/j.nds.2010.11.004 .
M MacInnes , M B Chadwick , T Kawano . Fission product yields for 14.8 MeV neutrons on 235 U, 238 U and 239 Pu . Nuclear Data Sheets , 2011 . 112 ( 12 ): 3135 - 3152 . DOI: 10.1016/j.nds.2011.11.009 http://doi.org/10.1016/j.nds.2011.11.009 .
K M Broom . 14.8-MeV neutron-induced fission of 238 U . Physical Review , 1962 . 126 ( 2 ): 627 - 631 . DOI: 10.1103/PhysRev.126.627 http://doi.org/10.1103/PhysRev.126.627 .
M E Gooden , C W Arnoid , J A Becker . Energy dependence of fission product yields from 235 U, 238 U and 239 Pu for incident neutron energies between 0.5 and 14.8MeV . Nuclear Data Sheets , 2016 . 131 319 - 356 . DOI: 10.1016/j.nds.2015.12.006 http://doi.org/10.1016/j.nds.2015.12.006 .
王 豫生 , 唐 甫楠 , 周 玲 , . Ge(Li)直接γ能谱法测定裂变谱中子及热中子诱发 235 U裂变的裂变累计产额 . 核化学与放射化学 , 1980 . 2 ( 3 ): 129 - 138 . http://xuewen.cnki.net/CJFD-HXFS198003000.html .
Yusheng WANG , Funan TANG , Ling ZHOU , . The measurement of cumulative fission yields of 235 U induced by thermo-and fission spectrum neutrons by using Ge(Li) detector . Journal of Nuclear and Radiochemistry , 1980 . 2 ( 3 ): 129 - 138 . http://xuewen.cnki.net/CJFD-HXFS198003000.html .
罗 小兵 , 夏 宜君 , 龙 先灌 . γ强度测量中级联符合效应的修正 . 核技术 , 1992 . 15 ( 7 ): 428 - 435 . http://www.cnki.com.cn/Article/CJFDTOTAL-HJSU199207009.htm .
Xiaobing LUO , Yijun XIA , Xianguan LONG . Coincidence summing correction in the measurement of gamma-rays intensity . Nuclear Techniques , 1992 . 15 ( 7 ): 428 - 435 . http://www.cnki.com.cn/Article/CJFDTOTAL-HJSU199207009.htm .
华 艳 , 朱 祚宾 , 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, 116 . http://www.cnki.com.cn/Article/CJFDTOTAL-HJSU201212003.htm .
Yan HUA , Zuobin ZHU , Yiqin LIU , . Calibration of HPGe detector efficiency . Nuclear Electronics & Detection Technology , 2014 . 34 ( 1 ): 86 - 88, 116 . http://www.cnki.com.cn/Article/CJFDTOTAL-HJSU201212003.htm .
华艳. 高纯锗探测器的效率刻度[D]. 成都: 四川大学, 2014.
HUA Yan. Calibration of HPGe detector efficiency[D]. Chengdu: Sichuan University, 2014.
汪 超 , 肖 军 , 王 攀 , . 用活化法无损测定金属铀样品中 238 U的含量 . 核技术 , 2016 . 39 ( 8 ): 080201 DOI: 10.11889/j.0253-3219.2016.hjs.39.080201 http://doi.org/10.11889/j.0253-3219.2016.hjs.39.080201 http://www.j.sinap.ac.cn/hejishu/CN/abstract/abstract629.shtml .
Chao WANG , Jun XIAO , Pan WANG , . Nondestructive determination the content of 238 U in mental uranium sample by using the activation method . Nuclear Techniques , 2016 . 39 ( 8 ): 080201 DOI: 10.11889/j.0253-3219.2016.hjs.39.080201 http://doi.org/10.11889/j.0253-3219.2016.hjs.39.080201 http://www.j.sinap.ac.cn/hejishu/CN/abstract/abstract629.shtml .
刘双童. 14 MeV能区中子诱发 232 Th裂变碎片截面测量[D]. 兰州: 兰州大学, 2016.
LIU Shuangtong. Measurement of fission cross sections for 232 Th(n, f)X reaction induced by neutrons around 14MeV[D]. Lanzhou: Lanzhou University, 2016.
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 .
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