Experiment study of the decays of (112)Cs and (111)Xe
2012
An experiment to search for the {alpha} decay of {sup 112}Cs has been performed at the Holifield Radioactive Ion Beam Facility (HRIBF) at Oak Ridge National Laboratory. The {alpha} decay of {sup 112}Cs was not observed, thus setting the upper limit of the {alpha} branching ratio at 0.26%. The half-life of {sup 112}Cs was measured as 506 {+-} 55 {micro}s. In the same measurement the decay properties of its proton decay daughter {sup 111}Xe were also reinvestigated. The newly measured {alpha} branching ratio for {sup 111}Xe is 10.4 {+-} 1.9%. The experimental proton separation energies S{sub p} for odd-Z nuclei above {sup 100}Sn were compared to shell model calculations. The calculated proton separation energies for {sup 103}Sb and {sup 102}Sb point to half-lives of the order of 10 ps and 1 ns, respectively.
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