67 Kr two-proton radioactivity: Results and theoretical interpretations

T. Goigoux, P. Ascher, B. Blank, M. Gerbaux, J. Giovinazzo, S. Grévy, T. Kurtukian Nieto, C. Magron, D. S. Ahn, P. Doornenbal, N. Fukuda, N. Inabe, G. Kiss, T. Kubo, S. Kubono, S. Nishimura, H. Sakurai, Y. Shimizu, C. Sidong, P. A. SöderströmT. Sumikama, H. Suzuki, H. Takeda, P. Vi, J. Wu, Y. Fujita, M. Tanaka, J. Agramunt, A. Algora, V. Guadilla, A. Montaner-Piza, A. I. Morales, S. E.A. Orrigo, B. Rubio, W. Gelletly, P. Aguilera, F. Molina, F. Diel, D. Lubos, G. de Angelis, D. Napoli, C. Borcea, A. Boso, R. B. Cakirli, E. Ganioglu, J. Chiba, D. Nishimura, H. Oikawa, Y. Takei, S. Yagi, K. Wimmer, G. De France, S. Go, B. A. Brown

Research output: Contribution to journalArticle


The two-proton radioactivity is a unique tool to study the nuclear structure beyond the proton drip-line. Since its discovery in 2002, the known emitters have been 19 Mg, 45 Fe, 48 Ni, 54 Zn and 67 Kr. 67 Kr was observed for the first time at the RIKEN Nishina Center in 2015. Its decay energy was measured at 1690(17) keV with a branching ratio of 37(14)%. The half-life, 7.4(30) ms, was found in contradiction with theoretical calculations, pointing out effects of decay dynamics and nuclear deformation.

Original languageEnglish
Pages (from-to)399-404
Number of pages6
JournalActa Physica Polonica B
Issue number3
Publication statusPublished - Mar 2019
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Goigoux, T., Ascher, P., Blank, B., Gerbaux, M., Giovinazzo, J., Grévy, S., ... Brown, B. A. (2019). 67 Kr two-proton radioactivity: Results and theoretical interpretations. Acta Physica Polonica B, 50(3), 399-404. https://doi.org/10.5506/APhysPolB.50.399