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Fission barrier of actinide nuclei with double-$$Lambda$$ particles within the Skyrme-Hartree-Fock method

Minato, Futoshi   ; Chiba, Satoshi

Fission of actinide nuclei including two $$Lambda$$ hyperons is studied in the framework of the Skyrme-Hartree-Fock approach. We adopt the zero-range Skyrme type interaction between $$Lambda$$-$$N$$ and $$Lambda$$-$$Lambda$$. Fission barrier is investigated using several parameter sets for $$Lambda$$$$Lambda$$ interactions. We obtain the result that the barrier height becomes higher as the number of $$Lambda$$ particle increases and the barrier width has a dependence on the $$LambdaLambda$$ interaction. A relation between $$Lambda$$ binding energy and density distribution of $$Lambda$$ particle inside a core nucleus are also discussed. We found that the both $$Lambda$$ particles are attracted into heavier fission fragment.



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Category:Physics, Nuclear



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