Abstract
β-decay properties of neutron-rich Ca isotopes have been obtained. Half-life values were determined for the first time for ( ms), ( ms), and ( ms). The half-life of ms deduced for is significantly longer than reported previously, where the decay chain → → was considered. A delayed γ ray with an energy of 247 keV was identified following β decay of and is proposed to depopulate the level in . The β-decay properties compare favorably with the results of shell-model calculations completed in the full space with the GXPF1 interaction. The half-lives of the neutron-rich Ca isotopes are also compared with gross β-decay theory. The systematic trend of the neutron-rich Ca half-lives is consistent with the presence of a subshell gap at .
4 More- Received 29 November 2007
DOI:https://doi.org/10.1103/PhysRevC.77.014313
©2008 American Physical Society