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Article Dans Une Revue EPJ Web of Conferences Année : 2024

Microscopic modeling of direct pre-equilibrium emission: Impact on exclusive and inclusive (n,$x$n) and fission channels

Résumé

We report on a microscopic modeling of the first order of multistep direct emission based on one phonon excitations, given by the QRPA model, and an effective in-medium nucleon nucleon interaction, described within the JLM folding model. The results of our coupled channels framework for deformed target are illustrated in the case of low energy discrete state excitations in 152Sm. Pre-equilibrium predictions and their impact on inclusive and exclusive (n,xn) cross sections and fission cross sections are discussed for actinides. We discuss the importance of i) collective excitations to describe the neutron emission spectra and of ii) spin distribution of the residual nucleus formed after the neutron pre-equilibrium emission, that is a key ingredient to model the residual nucleus decay.
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hal-04529813 , version 1 (11-06-2024)

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Marc Dupuis, Roberto Capote, Toshihiko Kawano, Maëlle Kerveno, Philippe Dessagne, et al.. Microscopic modeling of direct pre-equilibrium emission: Impact on exclusive and inclusive (n,$x$n) and fission channels. EPJ Web of Conferences, 2024, 16th Varenna Conference on Nuclear Reaction Mechanisms 11–16 juin 2023 Varenna, Italy, 292, pp.04003. ⟨10.1051/epjconf/202429204003⟩. ⟨hal-04529813⟩
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