$\beta$ decay of the exotic $T_z$ = -2 nuclei $^{48}$Fe, $^{52}$Ni and $^{56}$Zn
S.E.A. Orrigo
(1)
,
B. Rubio
(1)
,
Y. Fujita
,
W. Gelletly
,
J. Agramunt
,
A. Algora
,
P. Ascher
(2)
,
B. Bilgier
,
Bertram Blank
(2)
,
L. Caceres
(3)
,
R. B. Cakirli
,
E. Ganioğlu
,
M. Gerbaux
(2)
,
J. Giovinazzo
(2)
,
S. Grévy
(2)
,
O. Kamalou
(3)
,
H. C. Kozer
,
L. Kucuk
,
T. Kurtukian Nieto
(2)
,
F. Molina
,
L. Popescu
,
A.M. Rogers
,
G. Susoy
,
C. Stodel
(3)
,
T. Suzuki
,
A. Tamii
,
J.C. Thomas
(3)
S.E.A. Orrigo
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- Function : Correspondent author
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Y. Fujita
- Function : Author
W. Gelletly
- Function : Author
J. Agramunt
- Function : Author
A. Algora
- Function : Author
P. Ascher
- Function : Author
- PersonId : 739967
- IdHAL : pauline-ascher
- ORCID : 0000-0002-1990-0848
- IdRef : 157777685
B. Bilgier
- Function : Author
Bertram Blank
- Function : Author
- PersonId : 738372
- IdHAL : bertram-blank
- ORCID : 0000-0001-8050-6850
- IdRef : 069503834
R. B. Cakirli
- Function : Author
E. Ganioğlu
- Function : Author
M. Gerbaux
- Function : Author
- PersonId : 1173352
- IdHAL : mathias-gerbaux
- ORCID : 0000-0002-3852-2643
J. Giovinazzo
- Function : Author
- PersonId : 738930
- IdHAL : jerome-giovinazzo
- ORCID : 0000-0001-7436-8877
- IdRef : 198020287
H. C. Kozer
- Function : Author
L. Kucuk
- Function : Author
T. Kurtukian Nieto
- Function : Author
- PersonId : 10429
- IdHAL : t-kurtukian-nieto
- ORCID : 0000-0002-0028-0220
- IdRef : 259022632
F. Molina
- Function : Author
L. Popescu
- Function : Author
A.M. Rogers
- Function : Author
G. Susoy
- Function : Author
C. Stodel
- Function : Author
- PersonId : 177922
- IdHAL : christelle-stodel
- ORCID : 0000-0003-4658-2213
- IdRef : 227006291
T. Suzuki
- Function : Author
A. Tamii
- Function : Author
J.C. Thomas
- Function : Author
- PersonId : 738662
- IdHAL : jean-charles-thomas
- ORCID : 0000-0001-6618-9772
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.