Two-Proton Radioactivity of Kr-67

T. Goigoux; P. Ascher; B. Blank; M. Gerbaux; J. Giovinazzo; S. Grevy; T. Kurtukian Nieto; C. Magron; P. Doornenbal; G. G. Kiss; S. Nishimura; P. -A. Soederstroem; V. H. Phong; J. Wu; D. S. Ahn; N. Fukuda; N. Inabe; T. Kubo; S. Kubono; H. Sakurai; Y. Shimizu; T. Sumikama; H. Suzuki; H. Takeda; J. Agramunt; A. Algora; V. Guadilla; A. Montaner-Piza; A. I. 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. 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

doi:10.1103/PhysRevLett.117.162501

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Two-Proton Radioactivity of Kr-67

T. Goigoux, P. Ascher, B. Blank, M. Gerbaux, J. Giovinazzo, S. Grevy, T. Kurtukian Nieto, C. Magron, P. Doornenbal, G. G. Kiss, …

Physical review letters, Vol.117(16), 162501

14/10/2016

DOI: https://doi.org/10.1103/PhysRevLett.117.162501

PMID: 27792367

Abstract

Physical Sciences

Physics

Physics, Multidisciplinary

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In an experiment with the BigRIPS separator at the RIKEN Nishina Center, we observed two-proton (2p) emission from Kr-67. At the same time, no evidence for 2p emission of Ge-59 and Se-63, two other potential candidates for this exotic radioactivity, could be observed. This observation is in line with Q value predictions which pointed to Kr-67 as being the best new candidate among the three for two-proton radioactivity. Kr-67 is only the fourth 2p ground-state emitter to be observed with a half-life of the order of a few milliseconds. The decay energy was determined to be 1690(17) keV, the 2p emission branching ratio is 37(14)%, and the half-life of Kr-67 is 7.4(30) ms.

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Title: Two-Proton Radioactivity of Kr-67
Creators: T. Goigoux - Laboratoire de Physique des deux infinis Bordeaux
P. Ascher - Institut National de Physique Nucléaire et de Physique des Particules
B. Blank - Institut National de Physique Nucléaire et de Physique des Particules
M. Gerbaux - Université de Bordeaux
J. Giovinazzo - Institut National de Physique Nucléaire et de Physique des Particules
S. Grevy - Université de Bordeaux
T. Kurtukian Nieto - Institut National de Physique Nucléaire et de Physique des Particules
C. Magron - Institut National de Physique Nucléaire et de Physique des Particules
P. Doornenbal - RIKEN Nishina Center
G. G. Kiss - RIKEN Nishina Center
S. Nishimura - RIKEN Nishina Center
P. -A. Soederstroem - RIKEN
V. H. Phong - RIKEN Nishina Center
J. Wu - RIKEN Nishina Center
D. S. Ahn - RIKEN Nishina Center
N. Fukuda - RIKEN Nishina Center
N. Inabe - RIKEN Nishina Center
T. Kubo - RIKEN Nishina Center
S. Kubono - RIKEN Nishina Center
H. Sakurai - RIKEN Nishina Center
Y. Shimizu - RIKEN Nishina Center
T. Sumikama - RIKEN Nishina Center
H. Suzuki - RIKEN Nishina Center
H. Takeda - RIKEN Nishina Center
J. Agramunt - Instituto de Física Corpuscular
A. Algora - Hungarian Academy of Sciences
V. Guadilla - Universitat de València
A. Montaner-Piza - Universitat de València
A. I. Morales - Universitat de València
S. E. A. Orrigo - Universitat de València
B. Rubio - Instituto de Física Corpuscular
Y. Fujita - Osaka University
M. Tanaka - Osaka University
W. Gelletly - University of Surrey
P. Aguilera - Comisión Chilena de Energía Nuclear
F. Molina - Comisión Chilena de Energía Nuclear
F. Diel - University of Cologne
D. Lubos - Technical University of Munich
G. de Angelis - Istituto Nazionale di Fisica Nucleare
D. Napoli - Legnaro National Laboratories
C. Borcea - Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
A. Boso - INFN Sezione di Padova
R. B. Cakirli - Istanbul University
E. Ganioglu - Istanbul University
J. Chiba - Tokyo University of Science
D. Nishimura - Tokyo University of Science
H. Oikawa - Tokyo University of Science
Y. Takei - Tokyo University of Science
S. Yagi - Tokyo University of Science
K. Wimmer - The University of Tokyo
G. de France - GANIL
S. Go - University of Tennessee at Knoxville
B. A. Brown - Michigan State University
Publication Details: Physical review letters, Vol.117(16), 162501
Publisher: Amer Physical Soc
Number of pages: 6
Date published: 14/10/2016
Grant note: ST/F012012/1 / STFC; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC) Max-Planck Partner group NP0702-RIBF4R1-01; NP1112-RIBF82; NP1112-RIBF93 / RIBF 25247045 / JSPS KAKENHI Grant; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science; Grants-in-Aid for Scientific Research (KAKENHI) 26 04808 / Japanese Society for the Promotion of Science; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science French-Japanese "Laboratoire international associe" FJ-NSP IFIC SEV-2014-0398 / Centro de Excelencia Severo Ochoa del PHY-1404442 / NSF; National Science Foundation (NSF) FPA2011-24553; FPA2014-52823-C2-1-P / Spanish Ministerio de Economia y Competitividad; Spanish Government 15K05104 / MEXT Japan; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)
Identifiers: 99928939502346
Academic Unit: School of Maths and Physics
Language: English
Resource Type: Journal article

Two-Proton Radioactivity of Kr-67

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