The decay of 80As

McMillan, D.K.; Pate, Brian D.

doi:10.1016/0375-9474(71)90408-8

Cited by 16 publications

(1 citation statement)

References 12 publications

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“…To obtain the β-delayed neutron emission probability of 81 Zn we compared the number of decays arising from the direct 81 Zn β-decay chain, using the absolute intensities of the two strongest lines in 81 Ge, at 216 and 828 keV [37], to the 81 Zn β − n decay branch of the A = 80 chain, taking the absolute intensities per 100 parent decays of 666-, 1207-, and 1645-keV lines from the β decay of 80 As to 80 Se [41,42]. We employ the literature value of 11.9(7)% for the 81 Ga β − n branch [37] and apply a small correction factor coming from the 80 Ga β − n decay probability of 0.86(7)%, also taken from the literature [43].…”

Section: B β-Delayed Neutron Emission Probability Of 81 Znmentioning

confidence: 99%

Fast-timing study of Ga81 from the β decay of Zn81

Paziy¹,

Fraile²,

Mach³

et al. 2020

Phys. Rev. C

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The β − decay of 81 Zn to the neutron magic N = 50 nucleus 81 Ga, with only three valence protons with respect to 78 Ni, was investigated. The study was performed at the ISOLDE facility at CERN by means of γ spectroscopy. The 81 Zn half-life was determined to be T 1/2 = 290(4) ms while the β-delayed neutron emission probability was measured as P n = 23(4)%. The analysis of the β-gated γ -ray singles and γ -γ coincidences from the decay of 81 Zn provides 47 new levels and 70 new transitions in 81 Ga. The β − n decay of 81 Zn was observed and a new decay scheme into the odd-odd 80 Ga nucleus was established. The half-lives of the first and second excited states of 81 Ga were measured via the fast-timing method using LaBr 3 (Ce) detectors. The level scheme and transition rates are compared to large-scale shell-model calculations. The low-lying structure of 81 Ga is interpreted in terms of the coupling of the three valence protons outside the doubly magic 78 Ni core.

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