ENDF-VI库次级中子数据的能量守恒问题

伊炜伟; 田东风; 孙伟力

doi:10.11804/NuclPhysRev.20.03.226

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ENDF-VI库次级中子数据的能量守恒问题

伊炜伟, 田东风, 孙伟力

文章导航 > 原子核物理评论 > 2003 > 20(3): 226-230

伊炜伟, 田东风, 孙伟力. ENDF-VI库次级中子数据的能量守恒问题[J]. 原子核物理评论, 2003, 20(3): 226-230. doi: 10.11804/NuclPhysRev.20.03.226

引用本文:

伊炜伟, 田东风, 孙伟力. ENDF-VI库次级中子数据的能量守恒问题[J]. 原子核物理评论, 2003, 20(3): 226-230. doi: 10.11804/NuclPhysRev.20.03.226

YI Wei-wei, TIAN Dong-feng, SUN Wei-li. Energy-balance Problem of Secondary Neutrons of ENDF-VI Data[J]. Nuclear Physics Review, 2003, 20(3): 226-230. doi: 10.11804/NuclPhysRev.20.03.226

Citation:

YI Wei-wei, TIAN Dong-feng, SUN Wei-li. Energy-balance Problem of Secondary Neutrons of ENDF-VI Data[J]. Nuclear Physics Review, 2003, 20(3): 226-230. doi: 10.11804/NuclPhysRev.20.03.226

ENDF-VI库次级中子数据的能量守恒问题

doi: 10.11804/NuclPhysRev.20.03.226

1 北京应用物理与计算数学研究所; 北京100088; 2 中国工程物理研究院北京研究生部; 北京100088;

Energy-balance Problem of Secondary Neutrons of ENDF-VI Data

1 Beijing Department of Graduate School; China Academy of Engineering Physics; Beijing 100088; China; 2 Institute of Applied Physics and Computational Mathematics; Beijing 100088; China);

摘要: 在评价核数据库ENDF VI版的出射粒子能量分布数据(即文档5)中,一些核素在阈能附近的次级中子能量分布大多采用简单的近似方法描述,例如三角形分布或矩形分布.这些简单的近似描述,将导致产生散射矩阵的"双峰"现象,或使平均次级中子能量过大而产生负KERMA(ki netic energy release in materials)因子.针对这两个现象,通过细致的分析,讨论了这些现象的产生原因,并试对相关数据做一定的修正,以改善次级中子分布的能量守恒问题. In file 5 of ENDF VI, the arbitrary tabulated function (L=1) was applied to some threshold reactions of some nuclides. The energy distribution of secondary spectrum was given approximately as a triangular shape or rectangular shape at the threshold energy for some nuclides. The triangular shape distributions would cause twopeaked energy distribution near the threshold energy, which must affect the group transfer matrix. The rectangular shape make the E′n too large, that may lead to...
- 阈能 /
- 次级中子能量分布 /
- 能量守恒
Abstract: In file 5 of ENDF VI, the arbitrary tabulated function (L=1) was applied to some threshold reactions of some nuclides. The energy distribution of secondary spectrum was given approximately as a triangular shape or rectangular shape at the threshold energy for some nuclides. The triangular shape distributions would cause twopeaked energy distribution near the threshold energy, which must affect the group transfer matrix. The rectangular shape make the E′n too large, that may lead to...
- threshold energy /
- energy distributions of secondary neutron /
- energy balance

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ENDF-VI库次级中子数据的能量守恒问题

doi: 10.11804/NuclPhysRev.20.03.226

1 北京应用物理与计算数学研究所; 北京100088; 2 中国工程物理研究院北京研究生部; 北京100088;

收稿日期: 1900-01-01
修回日期: 1900-01-01
刊出日期: 2003-09-20

关键词:

阈能 /

次级中子能量分布 /

能量守恒

摘要: 在评价核数据库ENDF VI版的出射粒子能量分布数据(即文档5)中,一些核素在阈能附近的次级中子能量分布大多采用简单的近似方法描述,例如三角形分布或矩形分布.这些简单的近似描述,将导致产生散射矩阵的"双峰"现象,或使平均次级中子能量过大而产生负KERMA(ki netic energy release in materials)因子.针对这两个现象,通过细致的分析,讨论了这些现象的产生原因,并试对相关数据做一定的修正,以改善次级中子分布的能量守恒问题. In file 5 of ENDF VI, the arbitrary tabulated function (L=1) was applied to some threshold reactions of some nuclides. The energy distribution of secondary spectrum was given approximately as a triangular shape or rectangular shape at the threshold energy for some nuclides. The triangular shape distributions would cause twopeaked energy distribution near the threshold energy, which must affect the group transfer matrix. The rectangular shape make the E′n too large, that may lead to...

English Abstract

伊炜伟, 田东风, 孙伟力. ENDF-VI库次级中子数据的能量守恒问题[J]. 原子核物理评论, 2003, 20(3): 226-230. doi: 10.11804/NuclPhysRev.20.03.226

引用本文:

伊炜伟, 田东风, 孙伟力. ENDF-VI库次级中子数据的能量守恒问题[J]. 原子核物理评论, 2003, 20(3): 226-230. doi: 10.11804/NuclPhysRev.20.03.226

YI Wei-wei, TIAN Dong-feng, SUN Wei-li. Energy-balance Problem of Secondary Neutrons of ENDF-VI Data[J]. Nuclear Physics Review, 2003, 20(3): 226-230. doi: 10.11804/NuclPhysRev.20.03.226

Citation:

YI Wei-wei, TIAN Dong-feng, SUN Wei-li. Energy-balance Problem of Secondary Neutrons of ENDF-VI Data[J]. Nuclear Physics Review, 2003, 20(3): 226-230. doi: 10.11804/NuclPhysRev.20.03.226