DOSSAT, C.; BEY, A.; BLANK, Bertram; CANCHEL, G.; FLEURY, Agnès; GIOVINAZZO, J.; MATEA, I.; DE OLIVEIRA SANTOS, Francois; GEORGIEV, G.; GRÉVY, S.; STEFAN, I.; THOMAS, J.C.; ADIMI, N.; BORCEA, C.; CORTINA GIL, D.; CAAMANO, M.; STANOIU, M.; AKSOUH, F.; A. BROWN, B.; V. GRIGORENKO, L.

doi:10.1103/PhysRevC.72.054315

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DOSSAT, C.
Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]

BEY, A.
Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]

BLANK, Bertram
Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]

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Physical Review C. 2005, vol. 72, p. 054315

American Physical Society

Résumé en anglais

In an experiment at the SISSI/LISE3 facility of GANIL, we have studied the decay of the two proton-rich nuclei 45Fe and 48Ni. We identified 30 implantations of 45Fe and observed for the second time four implantation events of 48Ni. In 17 cases, 45Fe decays by two-proton emission with a decay energy of 1.154(16) MeV and a half-life of T_1/2 = 1.6+0.5_-0.3 ms. The observation of 48Ni and of its decay allows us to deduce a half-life of T_1/2 = 2.1+2.1_-0.7 ms. One out of four decay events is completely compatible with two-proton radioactivity and may therefore indicate that 48Ni has a two-proton radioactivity branch. We discuss all information now available on two-proton radioactivity for 45Fe and 48Ni and compare it to theoretical models.< Réduire

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proton emission decay

nuclei with mass number 39 to 58

radioactive decay periods

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Two-proton radioactivity studies with 45Fe and 48Ni

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