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Further Microscopic Studies of the Fission Barriers of Heavy Nuclei

T.V. Nhan Hao 1 J. Le Bloas 1 Meng-Hock Koh 1 L. Bonneau 1 Ph. Quentin 1
1 THEORIE - Physique théorique
CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
Abstract : Two systematic sources of error in most current microscopic evaluations of fission-barrier heights are studied. They are concerned with an approximate treatment of the Coulomb exchange terms (known as the Slater approximation) in the self-consistent mean-fields and the projection on good parity states (e.g., of positive parity for the spontaneous fission of an even-even nucleus) of left-right reflection asymmetric intrinsic solutions (e.g., around the second barrier). Approximate or unprojected solutions are shown to lead each to an underestimation of the barrier heights by a few hundred keV.
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Submitted on : Thursday, June 28, 2012 - 4:30:56 PM
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T.V. Nhan Hao, J. Le Bloas, Meng-Hock Koh, L. Bonneau, Ph. Quentin. Further Microscopic Studies of the Fission Barriers of Heavy Nuclei. International Journal of Modern Physics E, World Scientific Publishing, 2012, 21, pp.1250051. ⟨10.1142/S0218301312500516⟩. ⟨in2p3-00712976⟩



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