中子诱发~(238)U裂变碎片质量分布的唯象模型研究
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- 英文论文题名：Study on the mass distributions of the n+~(238)U Fission with Phenomenological Model
- 论文作者：徐咏梅 ; 刘丽乐 ; 舒能川 ; 陈永静 ; 刘廷进 ; 孙正军
- 英文论文作者：XU Yong-mei ; LIU Li-le ; SHU Neng-chuan ; CHEN Yong-jing ; LIU Ting-jin ; SUN Zheng-jun ; China Nuclear Data Center ; China Institute of Atomic Energy
- 年：2015
- 作者机构：中国原子能科学研究院核数据重点实验室;
- 论文关键词：~(238)U ; 裂变产额 ; 质量分布
- 英文论文关键词：~(238)U ; fission Yields ; mass distribution
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第7册（计算物理分卷、核物理分卷、粒子加速器分卷、核聚变与等离子体物理分卷、脉冲功率技术及其应用分卷、辐射物理分卷）
- 语种：中文
- 分类号：O571
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：7
- 文件大小：280k
- 原文格式：O
- 会议级别：全国
摘要
本工作在多模式无规颈断裂模型的基础上,通过简化位能曲面的表示方式,加入温度相关的壳效应能,建立了中子诱发~(238)U裂变的唯象模型。同时收集评价了中子诱发~(238)U裂变产额的实验数据,用于模型参数的求解。利用该模型和评价得到的实验数据,研究了0~20 MeV中子诱发~(238)U裂变产物的质量分布和产额能量关系,计算得到的质量分布与实验数据符合较好,可以预测没有能点区域的产额质量分布。
Based on the Multi-Modal Random Neck-Rupture Model(Brosa model),a phenomenological model of n + ~(238)U fission is created with simplified potential energy express and corrected shelleffect as a function of energy.The experimental data n + ~(238)U of fission yield were collected and evaluated to deduce the model parameters.With the above phenomenological model and experimental data,the yields of mass distribution and energy-dependence were calculated from 0~20Mev range,and the result was showed that the mass distributions well agreed with the experimental data.The model could predict yields without available measured data.
Based on the Multi-Modal Random Neck-Rupture Model(Brosa model),a phenomenological model of n + ~(238)U fission is created with simplified potential energy express and corrected shelleffect as a function of energy.The experimental data n + ~(238)U of fission yield were collected and evaluated to deduce the model parameters.With the above phenomenological model and experimental data,the yields of mass distribution and energy-dependence were calculated from 0~20Mev range,and the result was showed that the mass distributions well agreed with the experimental data.The model could predict yields without available measured data.
引文
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[7]L.KOCH,J,RCA,29,61,81(21155).
[8]S.Nagy+,J,PR/C,17,163,197801(10798).
[9]K.DEBERTIN,C78HARWELL,,229,7809(21306).
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[11]Li Ze+,J,CNP,7,(2),97,198505(30751).
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[13]S.Daroczy+,J,AK,18,317,1976(30639).
[14]J.P.BOCQUET+,J,NP/A,189,556,7207(21734).
[15]Liu Conggui+,J,CNP,7,235,198508(30788).
[16]J.Laurec+,J,NDS,111,2965,2010(21708).
[17]S.T.LAM+,J,PR/C,22,2485,8012(10964).
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[23]U.Brosa,S.Grossman,A.M uller,Phys.Rep.197,167(1990).
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