A Detailed Study of Low-Lying Levels in ⁷⁹Kr by the ⁷⁹Br(p, nγ)⁷⁹Kr Reaction

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Excitation functions of γ-rays from the ⁷⁹Br(p, n)⁷⁹Kr reaction were measured with 2.82- to 3.50-MeV protons, and neutron-γ and γ-γ coincidence spectra were recorded at 5.00 MeV. Angular distributions of some γ rays were also measured with 3.50-MeV protons to determine spins and parities. A level scheme of ⁷⁹Kr was proposed from detailed analyses of the data. In particular, a previously unknown 5⁄2⁺ level was identified at 290 keV, and the presence of a 9⁄2⁺ level at 149 keV was confirmed.