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arXiv · 0909.0868

Fission of heavy $Λ$ hypernuclei with the Skyrme-Hartree-Fock approach

F. Minato·S. Chiba·K. Hagino
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Abstract

Fission-related phenomena of heavy $Λ$ hypernuclei are discussed with the constraint Skyrme-Hartree-Fock+BCS (SHF+BCS) method, in which a similar Skyrme-type interaction is employed also for the interaction between a $Λ$ particle and a nucleon. Assuming that the $Λ$ particle adiabatically follows the fission motion, we discuss the fission barrier height of $^{239}_Λ$U. We find that the fission barrier height increases slightly when the $Λ$ particle occupies the lowest level. In this case, the $Λ$ particle is always attached to the heavier fission fragment. This indicates that one may produce heavy neutron-rich $Λ$ hypernuclei through fission, whose weak decay is helpful for the nuclear transmutation of long-lived fission products. We also discuss cases where the $Λ$ particle occupies a higher single-particle level.

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F. Minato, S. Chiba, K. Hagino. 2009-09-04. Fission of heavy $Λ$ hypernuclei with the Skyrme-Hartree-Fock approach. https://doi.org/10.1016/j.nuclphysa.2009.09.063

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