Calculation of delayed-neutron energy spectra in a QRPA-Hauser-Feshbach model

Kawano, Toshihiko; Moller, Peter; Wilson, William B

doi:10.1103/PhysRevC.78.054601

Title: Calculation of delayed-neutron energy spectra in a QRPA-Hauser-Feshbach model

Journal Article · Tue Jan 01 00:00:00 EST 2008 · Physical Review. C. Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.78.054601· OSTI ID:957708

Kawano, Toshihiko ^[1]; Moller, Peter ^[1]; Wilson, William B ^[1]

Los Alamos National Laboratory

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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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC52-06NA25396

OSTI ID:: 957708

Report Number(s):: LA-UR-08-04219; LA-UR-08-4219; PRVCAN; TRN: US1005595

Journal Information:: Physical Review. C. Nuclear Physics, Journal Name: Physical Review. C. Nuclear Physics; ISSN 0556-2813

Country of Publication:: United States

Language:: English

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