Sur la Mise en Evidence de Faibles Branches β dans la Désintégration de 77As
- 1 July 1971
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Physics
- Vol. 49 (13) , 1731-1737
- https://doi.org/10.1139/p71-207
Abstract
The decay of 77As was reinvestigated by means of a Ge(Li) detector, γ–γ coincidences and sum coincidence spectra were also measured with a Ge(Li)–NaI(Tl) assembly. Five new gamma rays are observed at 62.2, 82.0, 139.2, 200.6, and 439.7 keV, which are situated in a revised level scheme of 77Se. An anomalous 5/2+ level of 301 keV, seen in 76Se(d,p)77Se experiments, is suggested to be fed in the decay of 77As, with a branching ratio of 0.014%. The 440 keV (5/2−) collective level is also fed by 0.001% of the decays.Keywords
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