ORRIGO, S. E. A.; RUBIO, B.; FUJITA, Y.; BLANK, Bertram; GELLETLY, W.; AGRAMUNT, J.; ALGORA, A.; ASCHER, P.; BILGIER, B.; CACERES, L.; CAKIRLI, R. B.; FUJITA, H.; GANIOĞLU, E.; GERBAUX, M.; GIOVINAZZO, J.; GRÉVY, S.; KAMALOU, O.; KOZER, H. C.; KUCUK, L.; KURTUKIAN NIETO, T.; MOLINA, F.; POPESCU, L.; ROGERS, A. M.; SUSOY, G.; STODEL, C.; SUZUKI, T.; TAMII, A.; THOMAS, J.C.

doi:10.1103/PhysRevLett.112.222501

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Physical Review Letters. 2014, vol. 112, p. 939876

American Physical Society

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We report on the first experimental observation of a very exotic decay mode at the proton drip-line, the $\beta$-delayed $\gamma$-proton decay, clearly seen in the $\beta$ decay of the $T_z$ = -2, $^{56}$Zn nucleus. The $^{56}$Zn half-life and decay scheme have been determined. The decay proceeds by $\beta$-delayed proton emission and $\beta$-delayed $\gamma$ de-excitation. The exotic $\beta$-delayed $\gamma$-proton emission was also detected in three cases. It affects the usual determination of the Gamow-Teller (GT) strength. Absolute Fermi and GT strengths have been deduced. Evidence for fragmentation of the Fermi strength due to isospin mixing is found.< Leer menos

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First observation of $\beta$-delayed $\gamma$-proton decay in the $T_z$ = -2, $^{56}$Zn nucleus

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