β Decay of the exotic Tz=-2 nuclei Fe 48, Ni 52, and Zn 56

S. E A Orrigo, B. Rubio, Y. Fujita, W. Gelletly, J. Agramunt, A. Algora, P. Ascher, B. Bilgier, B. Blank, L. Cáceres, R. B. Cakirli, E. Ganioǧlu, M. Gerbaux, J. Giovinazzo, S. Grévy, O. Kamalou, H. C. Kozer, L. Kucuk, T. Kurtukian-Nieto, F. MolinaL. Popescu, A. M. Rogers, G. Susoy, C. Stodel, T. Suzuki, A. Tamii, J. C. Thomas

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Abstract

The results of a study of the β decays of three proton-rich nuclei with Tz=-2, namely Fe48,Ni52, and Zn56, 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 Zn56, where the exotic β-delayed γ-proton decay has been observed.

Original languageEnglish
Article number044336
JournalPhysical Review C - Nuclear Physics
Volume93
Issue number4
DOIs
Publication statusPublished - ápr. 27 2016

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Orrigo, S. E. A., Rubio, B., Fujita, Y., Gelletly, W., Agramunt, J., Algora, A., Ascher, P., Bilgier, B., Blank, B., Cáceres, L., Cakirli, R. B., Ganioǧlu, E., Gerbaux, M., Giovinazzo, J., Grévy, S., Kamalou, O., Kozer, H. C., Kucuk, L., Kurtukian-Nieto, T., ... Thomas, J. C. (2016). β Decay of the exotic Tz=-2 nuclei Fe 48, Ni 52, and Zn 56. Physical Review C - Nuclear Physics, 93(4), [044336]. https://doi.org/10.1103/PhysRevC.93.044336