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

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 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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Contributor : Michel Lion <>
Submitted on : Monday, May 30, 2016 - 10:58:11 PM
Last modification on : Saturday, June 13, 2020 - 6:30:02 PM

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S.E.A. Orrigo, B. Rubio, W. Gelletly, Y. Fujita, B. Blank, et al.. Observation of the 2$^+$ isomer in $^{52}$Co. Physical Review C, American Physical Society, 2016, 94, pp.044315. ⟨10.1103/PhysRevC.94.044315⟩. ⟨in2p3-01323677⟩



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