Consideration of memory of spin and parity in the fissioning compound nucleus by applying the Hauser-Feshbach fission fragment decay model to photonuclear reactions

Kawano, Toshihiko; Lovell, Amy Elizabeth; Okumura, Shin; Sasaki, Hirokazu; Stetcu, Ionel; Talou, P.

doi:10.1103/physrevc.107.044608

Consideration of memory of spin and parity in the fissioning compound nucleus by applying the Hauser-Feshbach fission fragment decay model to photonuclear reactions

Journal Article · Mon Apr 17 00:00:00 EDT 2023 · Physical Review. C

DOI:https://doi.org/10.1103/physrevc.107.044608· OSTI ID:2441365

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Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
International Atomic Energy Agency (IAEA), Vienna (Austria)

Prompt and β-delayed fission observables, such as the average number of prompt and delayed neutrons, the independent and cumulative fission product yields, and the prompt γ-ray energy spectra for the photonuclear reactions on ^235,238U and ²³⁹Pu, are calculated with the Hauser-Feshbach fission fragment decay (HF³⁢D) model and compared with available experimental data. Further, in the analysis of neutron-induced fission reactions to the case of photo-induced fission, an excellent reproduction of the delayed neutron yields supports a traditional assumption that the photo fission might be similar to the neutron-induced fission at the same excitation energies regardless of the spin and parity of the fissioning systems.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 2441365

Report Number(s):: LA-UR--22-32277

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 4 Vol. 107; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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