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First decay study of the very neutron-rich isotope Br-93

G. Lhersonneau·A. Woehr·B. Pfeiffer·K. -L. Kratz·the ISOLDE Collaboration
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Abstract

The decay of the mass-separated, very neutron-rich isotope Br-93 has been studied by gamma-spectroscopy. A level scheme of its daughter Kr-93 has been constructed. Level energies, gamma-ray branching ratios and multipolarities suggest spins and parities which are in accord with a smooth systematics of the N=57 isotones for Z less-equal 40, suggesting the N=56 shell closure still to be effective in Kr isotopes. So far, there is no indication of a progressive onset of deformation in neutron-rich Kr isotopes.

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G. Lhersonneau, A. Woehr, B. Pfeiffer, K. -L. Kratz, the ISOLDE Collaboration. 2000-12-20. First decay study of the very neutron-rich isotope Br-93. https://doi.org/10.1103/physrevc.63.034316

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