TWO-PROTON RADIOACTIVITY: THE INTERESTING CASE OF Kr-67 AND FURTHER STUDIES

Giovinazzo, J.; Goigoux, T.; Blank, B.; Ascher, P.; Gerbaux, M.; Grevy, S.; Kurtukian-Nieto, T.; Magron, C.; Doornenbal, P.; Fukuda, N.; Inabe, N.; Kiss, G. G.; Kubo, T.; Kubono, S.; Nishimura, S.; et. al.

Abstract

We report on the observation of Kr-67 that has been produced in an experiment performed at the RIKEN/BigRIPS facility. The two-proton decay of Kr-67 has been evidenced and this nucleus is thus the fourth observed long lived ground-state two-proton emitter, after Fe-45, Ni-48 and Zn-54. In addition, the decay of several isotopes in the mass region has been investigated. While for previous cases of two-proton radioactivity, the theoretical models could reproduce the measured data, this is not the case anymore for Kr-67. Two interpretations have been proposed to explain this discrepancy: a transition between real two-proton and sequential decay or the influence of deformation. These hypotheses will be tested in future experiments by measuring the angular and energy correlations of the emitted protons.

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Título según WOS: TWO-PROTON RADIOACTIVITY: THE INTERESTING CASE OF Kr-67 AND FURTHER STUDIES
Título de la Revista: ACTA PHYSICA POLONICA B
Volumen: 51
Número: 3
Editorial: JAGIELLONIAN UNIV PRESS
Fecha de publicación: 2020
Página de inicio: 577
Página final: 585
DOI:

10.5506/APHYSPOLB.51.577

Notas: ISI