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Time-odd effects and the spectroscopic properties of odd-mass fission fragments

P. Quentin 1 N. Minkov L. Bonneau 1 D. Samsoen
1 CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan
Abstract : Adding an extra nucleon having a definite K-value to an axially symmetrical even-even core generates a breaking of the time-reversal symmetry. Within the Skyrme-Hartree-Fock approach the effects of the time-odd mean-field terms resulting from the presence of non-vanishing current and spin-vector densities are investigated. In this preliminary study, pairing correlations are not taken into account. The associated removal of the Kramers degeneracy is interpreted in terms of diamagnetic/paramagnetic types of polarization of the even-even core in the field of an odd particle. This general approach is illustrated here by calculations in the region of light fragments of heavy (e.g. actinide) nuclei.
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http://hal.in2p3.fr/in2p3-00451091
Contributor : Virginie Mas <>
Submitted on : Thursday, January 28, 2010 - 11:07:51 AM
Last modification on : Friday, November 6, 2020 - 7:06:03 PM

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P. Quentin, N. Minkov, L. Bonneau, D. Samsoen. Time-odd effects and the spectroscopic properties of odd-mass fission fragments. 4th International Workshop on Nuclear Fission-product Spectroscopy, May 2009, Saint Paul lez Durance, France. pp.174-181, ⟨10.1063/1.3258220⟩. ⟨in2p3-00451091⟩

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