Observation of the 2$^+$ isomer in $^{52}$Co

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

doi:10.1103/physrevc.94.044315

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arXiv · 1605.08769

Observation of the 2$^+$ isomer in $^{52}$Co

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Abstract

We report the first observation of the 2$^+$ isomer in $^{52}$Co, produced in the $\beta$ decay of the 0$^+$, $^{52}$Ni ground state. We have observed three $\gamma$-rays at 849, 1910, and 5185 keV characterizing the $\beta$ de-excitation of the isomer. We have measured a half-life of 102(6) ms for the isomeric state. The Fermi and Gamow-Teller transition strengths for the $\beta$ decay of $^{52m}$Co to $^{52}$Fe have been determined. We also add new information on the $\beta$ decay of the 6$^+$, $^{52}$Co ground state, for which we have measured a half-life of 112(3) ms.

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S. E. A. Orrigo, B. Rubio, W. Gelletly, B. Blank, Y. Fujita, J. Giovinazzo, J. Agramunt, A. Algora, P. Ascher, B. Bilgier, L. Cáceres, R. B. Cakirli, G. de France, E. Ganioğlu, M. Gerbaux, S. Grévy, O. Kamalou, H. C. Kozer, L. Kucuk, T. Kurtukian-Nieto, F. Molina, L. Popescu, A. M. Rogers, G. Susoy, C. Stodel, T. Suzuki, A. Tamii, J. C. Thomas. 2016-05-27. Observation of the 2$^+$ isomer in $^{52}$Co. https://doi.org/10.1103/physrevc.94.044315

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