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

Minato, Futoshi   ; Chiba, Satoshi; Hagino, Koichi*

Fission-related phenomena of heavy 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 particle and a nucleon. Assuming that the particle adiabatically follows the fission motion, we discuss the fission barrier height of U. We find that the fission barrier height increases slightly when the particle occupies the lowest level. In this case, the particle is always attached to the heavier fission fragment. This indicates that one may produce heavy neutron-rich hypernuclei through fission, whose weak decay is helpful for the nuclear transmutation of long-lived fission products. We also discuss cases where the particle occupies a higher single-particle level.