$\beta$ decay of the exotic $T_z$ = -2 nuclei $^{48}$Fe, $^{52}$Ni and $^{56}$Zn - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2016

$\beta$ decay of the exotic $T_z$ = -2 nuclei $^{48}$Fe, $^{52}$Ni and $^{56}$Zn

Y. Fujita
  • Function : Author
W. Gelletly
  • Function : Author
J. Agramunt
  • Function : Author
A. Algora
  • Function : Author
B. Bilgier
  • Function : Author
R. B. Cakirli
  • Function : Author
E. Ganioğlu
  • Function : Author
H. C. Kozer
  • Function : Author
L. Kucuk
  • Function : Author
F. Molina
  • Function : Author
L. Popescu
  • Function : Author
A.M. Rogers
  • Function : Author
G. Susoy
  • Function : Author
C. Stodel
T. Suzuki
  • Function : Author
A. Tamii
  • Function : Author

Abstract

The results of a study of the beta decays of three proton-rich nuclei having $T_z$ = -2, namely $^{48}$Fe, $^{52}$Ni and $^{56}$Zn, produced in an experiment carried out at GANIL, are reported. In all the cases we have extracted the half-lives and the total $\beta$-delayed proton emission branching ratios. We have measured the individual $\beta$-delayed protons and $\beta$-delayed $\gamma$ rays with their branching ratios. Decay schemes have been determined for the three nuclei, and new energy levels are identified in the corresponding daughter nuclei. Competition between $\beta$-delayed protons and gammas is observed in the de-excitation of the $T$ = 2 Isobaric Analogue 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 $^{56}$Zn, where the exotic $\beta$-delayed $\gamma$-proton decay has been observed.

Dates and versions

in2p3-01258405 , version 1 (19-01-2016)

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Cite

S.E.A. Orrigo, B. Rubio, Y. Fujita, W. Gelletly, J. Agramunt, et al.. $\beta$ decay of the exotic $T_z$ = -2 nuclei $^{48}$Fe, $^{52}$Ni and $^{56}$Zn. Physical Review C, 2016, 93 (4), pp.044336. ⟨10.1103/PhysRevC.93.044336⟩. ⟨in2p3-01258405⟩
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