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RPA correction to the optical potential

Abstract : In studies of nucleon elastic scattering, a correction to the microscopic optical potential built from Melbourne g-matrix was found to be necessary at low nucleon incident energy [1,2]. Indeed, at energies lower than 60 MeV, the absorption generated from Melbourne g-matrix is too weak within 25%. Coupling to collective excited states of the target nucleus are not included in the g-matrix and could explain the missing absorption. We propose to calculate this correction to the optical potential using the Gogny D1S effective nucleon-nucleon interaction in the coupling to excited states of the target. We use the Random Phase Approximation (RPA) description of the excited states of the target with the same interaction.
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http://hal.in2p3.fr/in2p3-00872669
Contributor : Sophie Heurteau <>
Submitted on : Monday, October 14, 2013 - 11:22:53 AM
Last modification on : Wednesday, September 16, 2020 - 4:08:31 PM

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G. Blanchon, M. Dupuis, N. Vinh Mau, E. Bauge. RPA correction to the optical potential. CNR*09 - Second International Workshop on Compound Nuclear Reactions and Related Topics, Oct 2009, Bordeaux, France. pp.01002, ⟨10.1051/epjconf/20100201002⟩. ⟨in2p3-00872669⟩

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