Regular Article - Theoretical Physics
Proton radioactivity: The case for 53mCo proton-emitter isomer
Centro Brasileiro de Pesquisas Físicas - CBPF/MCT, Rua Dr. Xavier Sigaud 150, 22290-180, Rio de Janeiro-RJ, Brazil
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Accepted: 13 April 2010
Published online: 20 May 2010
The partial proton emission half-life for 53mCo unstable isomer is re-examined in the framework of a semiempirical model based on tunneling through a Coulomb-plus-centrifugal-plus-overlapping potential barrier within the spherical nucleus approximation. It is shown that the known measured half-life value of 17s is compatible with a large prolate shape for 53mCo proton emitter and a high angular momentum ℓ = 11 assigned to the proton transition to the ground state of 52Fe .
© SIF, Springer-Verlag Berlin Heidelberg, 2010