Open AccessTwo-Proton Radioactivity ofKr 67
Author(s) -
T. Goigoux,
P. Ascher,
Β. Blank,
M. Gerbaux,
J. Giovinazzo,
S. Grévy,
T. KurtukianNieto,
C. Magron,
P. Doornenbal,
G. Kiss,
S. Nishimura,
P.-A. Söderström,
V. H. Phong,
J. Wu,
D. S. Ahn,
N. Fukuda,
N. Inabe,
T. Kubo,
S. Kubono,
H. Sakuraï,
Y. Shimizu,
T. Sumikama,
Hiroshi Suzuki,
Hiroyuki Takeda,
J. Agramunt,
A. Algora,
V. Guadilla,
A. Montaner-Pizá,
Ana Isabel Morales,
S. E. A. Orrigo,
B. Rubio,
Y. Fujita,
M. Tanaka,
W. Gelletly,
P. Aguilera,
F. Molina,
F. Diel,
D. Lubos,
G. de Angelis,
D. R. Napoli,
C. Borcea,
A. Boso,
R. B. Cakirli,
E. Ganioğlu,
J. Chiba,
D. Nishimura,
Hiroyuki Oikawa,
Y. Takei,
S. Yagi,
K. Wimmer,
G. de France,
S. Go,
B. A. Brown
Publication year - 2016
Publication title -
physical review letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.688
H-Index - 673
eISSN - 1079-7114
pISSN - 0031-9007
DOI - 10.1103/physrevlett.117.162501
Subject(s) - physics , proton , atomic physics , nuclear physics
International audienceIn an experiment with the BigRIPS separator at the RIKEN Nishina Center, we observed two-proton(2p) emission from 67Kr. At the same time, no evidence for 2p emission of 59Ge and 63Se, two otherpotential candidates for this exotic radioactivity, could be observed. This observation is in line with Q valuepredictions which pointed to 67Kr as being the best new candidate among the three for two-protonradioactivity. 67Kr is only the fourth 2p ground-state emitter to be observed with a half-life of the order of afew milliseconds. The decay energy was determined to be 1690(17) keV, the 2p emission branching ratio is37(14)%, and the half-life of 67Kr is 7.4(30) ms