☆ 4.5 Article

Calculation of delayed-neutron energy spectra in a quasiparticle random-phase approximation-Hauser-Feshbach model

PHYSICAL REVIEW C (2008)

期刊

PHYSICAL REVIEW C

卷 78, 期 5, 页码 -

出版社

AMER PHYSICAL SOC

DOI: 10.1103/PhysRevC.78.054601

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Physics, Nuclear

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National Nuclear Security Administration of the U. S. Department of Energy at Los Alamos National Laboratory [DE-AC5206NA25396]

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Reagent

摘要

Theoretical beta-delayed-neutron spectra are calculated based on the Quasiparticle Random-Phase Approximation (QRPA) and the Hauser-Feshbach statistical model. Neutron emissions from an excited daughter nucleus after beta decay to the granddaughter residual are more accurately calculated than in previous evaluations, including all the microscopic nuclear structure information, such as a Gamow-Teller strength distribution and discrete states in the granddaughter. The calculated delayed-neutron spectra agree reasonably well with those evaluations in the ENDF decay library, which are based on experimental data. The model was adopted to generate the delayed-neutron spectra for all 271 precursors.

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