(α,n) reactions in oxide compounds calculated from the R-matrix theory

被引：4

作者：

Pigni, M. T. ^{[1
]}

Gauld, I. C. ^{[1
]}

Croft, S. ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

来源：

PROGRESS IN NUCLEAR ENERGY | 2020年 / 118卷

关键词：

Nuclear data; R-matrix theory; Neutron yield; Neutron energy spectra; NEUTRON YIELDS; CROSS-SECTIONS; ENERGY-SPECTRA;

D O I：

10.1016/j.pnucene.2019.103130

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

This paper presents an analysis of the neutron yield and energy distribution of neutron source terms generated from the interaction of alpha-particles with O-17,1(8) nuclei in fissile actinide compounds. When compared with measured data, the neutron yield and energy distribution data calculated for several isotopic configurations are used to validate the energy-dependent O-17,1(8)(alpha,n) cross sections modeled by a set of resonance parameters based on the Reich-Moore approximation of the R-matrix theory. The present analysis shows the fundamental importance of the partial contribution of the (alpha,n) cross sections to each excited state in determining the shape and magnitude of the calculated neutron spectra as a function of the emerging neutrons.

引用

页数：8

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