GIOVINAZZO, J.; BLANK, Bertram; BORCEA, C.; BROWN, B.A.; CHARTIER, M.; CZAJKOWSKI, S.; FLEURY, Agnès; GRZYWACZ, R.; LEWITOWICZ, M.; LOPEZ JIMENEZ, M.J.; MASLOV, V.; DE OLIVEIRA SANTOS, Francois; PFUTZNER, M.; PRAVIKOFF, M.S.; STANOIU, M.; THOMAS, J.C.

doi:10.1063/1.1615164

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GIOVINAZZO, J.
Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]

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

BORCEA, C.

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2003-02-12, Legnaro. 2003, vol. 681, p. 111-117

American Institute of Physics

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According to most mass models, several of the best candidates for two‐proton radioactivity lie in the A = 50 mass region, at the proton drip‐line. Recent experiments using the fragmentation of a 58Ni beam allowed us to reach this region and observe some of these candidates, like 45Fe and 48Ni. During an experiment at the GANIL / LISE3 facility helded in 2000, we could identify 22 events of implantation of 45Fe nuclei. The energy distribution of the corresponding decay events shows a clear peak at (1.14 ± 0.04) MeV that could be assigned to the direct 2‐proton emission from the ground state. This energy is in very good agreement with several theoretical predictions, and no coincident β particle has been observed experimentally. A half‐life of (4.7−1.4+3.4) ms has been measured for the decay of 45Fe.< Réduire

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Two-proton radioactivity: the case of $^{45}$Fe

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