Abstract
In this work we study the allowed and forbidden β −-decay transitions from 115Cd to 115In in the framework of the microscopic quasiparticle-phonon model (MQPM) using realistic single-particle model spaces and G-matrix-based effective interactions. Both the 1/2+ ground state and the 11/2− isomeric state in 115Cd decay to various final states in 115In. Results of the calculations are compared with experimental data on partial decay half-lives to probe the wave functions produced by the MQPM. Of special interest is the possible decay branch 1/2+ β 9/2+ that is fourth-forbidden non-unique with a possible ultra-low Q-value associated with it. Accurate measurement of the ground-state-to-ground-state Q-value by, e.g., the Penning trap techniques, is urged to verify the existence of this decay transition. Such ultra-low Q-value transitions could be valuable in measurements of the electron-neutrino mass and studies of the interference of atomic effects.
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Communicated by M. Hjorth-Jensen
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Haaranen, M., Suhonen, J. Beta decay of 115Cd and its possible ultra-low Q-value branch. Eur. Phys. J. A 49, 93 (2013). https://doi.org/10.1140/epja/i2013-13093-8
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DOI: https://doi.org/10.1140/epja/i2013-13093-8