Proton radioactivity with a Yukawa effective interaction |
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Authors: | T R Routray S K Tripathy B B Dash B Behera D N Basu |
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Institution: | 1.P.G. Department of Physics,Sambalpur University,Orissa,India;2.Variable Energy Cyclotron Centre,Kolkata,India |
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Abstract: | The half-lives of proton radioactivity of proton emitters are investigated theoretically. Proton-nucleus interaction potentials
are obtained by folding the densities of the daughter nuclei with a finite-range effective nucleon-nucleon interaction having
Yukawa form. The Wood-Saxon density distributions for the nuclei used in calculating the nuclear as well as the Coulomb interaction
potentials are predictions of the interaction. The quantum mechanical tunneling probability is calculated within the WKB framework.
These calculations provide reasonable estimates for the observed proton radioactivity lifetimes. The effects of neutron-proton
effective mass splitting in neutron-rich asymmetric matter as well as the nuclear matter incompressibility on the decay probability
are investigated. |
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