Abstract
The results of a study of the β decays of three proton-rich nuclei with Tz = −2, namely 48Fe ,52Ni, and 56Zn,
produced in an experiment carried out at GANIL, are reported. In all three cases we have extracted the half-lives
and the total β-delayed proton emission branching ratios. We have measured the individual β-delayed protons
and β-delayed γ rays and the branching ratios of the corresponding levels. Decay schemes have been determined
for the three nuclei, and new energy levels are identified in the daughter nuclei. Competition between β-delayed
protons and γ rays is observed in the de-excitation of the T = 2 isobaric analog states in all three cases. Absolute
Fermi and Gamow-Teller transition strengths have been determined. The mass excesses of the nuclei under study
have been deduced. In addition, we discuss in detail the data analysis taking as a test case 56Zn, where the exotic
β-delayed γ -proton decay has been observed.
Original language | English |
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Journal | Physical Review C |
Volume | 93 |
DOIs | |
State | Published - 27 Apr 2016 |