Abstract: Science Set Journal of Physics

Abstract:
The properties of neutron excess cobalt nuclei are determined utilizing a single-particle model. Single particle model calculations predict that A = 78 – 91 neutron excess cobalt systems form bound systems that have limiting beta decay half-lives in the range of 0.273 – 8.22 ms. Model half-life results for the A = 78 – 83 cobalt nuclei are within a factor of two of the predictions of the Japanese Nuclear Data Compilation calculations. The single particle model calculations include alpha, beta, positron, electron capture, and spontaneous fission decay modes. Neutron emission decay modes that have short half-lives are not readily determined by the model, and were not evaluated. The omission of these short-lived neutron emission decay modes implies that the single particle model calculations could overestimate the half-lives of neutron excess A = 78 – 91 cobalt nuclei.