Further Microscopic Studies of the Fission Barriers of Heavy Nuclei

T.V. Nhan Hao; J. Le Bloas; Meng-Hock Koh; L. Bonneau; Ph. Quentin

HAL : in2p3-00712976, version 1

DOI : 10.1142/S0218301312500516

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International Journal of Modern Physics E 21 (2012) 1250051

Further Microscopic Studies of the Fission Barriers of Heavy Nuclei

T.V. Nhan Hao¹, J. Le Bloas¹, Meng-Hock Koh¹, L. Bonneau¹, Ph. Quentin¹

(2012)

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.

1 :	CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan

équipe(s) de recherche : THEO

Thème(s)

Physique/Physique Nucléaire Théorique

Mot(s)-clé(s) : Microscopic calculations – fission barriers – Coulomb energy – parity projection – Hartree-Fock and random-phase approximations – Spontaneous fission – Fission reactions


in2p3-00712976, version 1
http://hal.in2p3.fr/in2p3-00712976
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Contributeur : Nathalie Martin <>
Déposé pour le compte de : Ludovic BONNEAU <>
Soumis le : Jeudi 28 Juin 2012, 16:30:56
Dernière modification le : Mardi 3 Juillet 2012, 09:35:54