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

J. Giovinazzo; T. Goigoux; B. Blank; P. Ascher; M. Gerbaux; S. Grevy; T. Kurtukian-Nieto; C. Magron; P. Doornenbal; N. Fukuda; N. Inabe; G. G. Kiss; T. Kubo; S. Kubono; S. Nishimura; H. Sakurai; Y. Shimizu; C. Sidong; P. -A. Soderstrom; T. Sumikama; H. Suzuki; H. Takeda; P. Vi; J. Wu; D. S. Ahn; 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:10.5506/APhysPolB.51.577

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

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

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

Acta physica Polonica, B, Vol.51(3), pp.577-585

01/01/2020

DOI: https://doi.org/10.5506/APhysPolB.51.577

Abstract

Physical Sciences

Physics

Physics, Multidisciplinary

Science & Technology

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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Title: TWO-PROTON RADIOACTIVITY: THE INTERESTING CASE OF Kr-67 AND FURTHER STUDIES
Creators: J. Giovinazzo - Ctr Etud Nucl Bordeaux Gradigna, Bordeaux, France
T. Goigoux - Ctr Etud Nucl Bordeaux Gradigna, Bordeaux, France
B. Blank - Ctr Etud Nucl Bordeaux Gradigna, Bordeaux, France
P. Ascher - Ctr Etud Nucl Bordeaux Gradigna, Bordeaux, France
M. Gerbaux - Ctr Etud Nucl Bordeaux Gradigna, Bordeaux, France
S. Grevy - Ctr Etud Nucl Bordeaux Gradigna, Bordeaux, France
T. Kurtukian-Nieto - Ctr Etud Nucl Bordeaux Gradigna, Bordeaux, France
C. Magron - Ctr Etud Nucl Bordeaux Gradigna, Bordeaux, France
P. Doornenbal - RIKEN
N. Fukuda - RIKEN
N. Inabe - RIKEN
G. G. Kiss - RIKEN
T. Kubo - RIKEN
S. Kubono - RIKEN
S. Nishimura - RIKEN
H. Sakurai - RIKEN
Y. Shimizu - RIKEN
C. Sidong - RIKEN
P. -A. Soderstrom - RIKEN
T. Sumikama - RIKEN
H. Suzuki - RIKEN
H. Takeda - RIKEN
P. Vi - RIKEN
J. Wu - RIKEN
D. S. Ahn - Inst Fis Corpuscular, Valencia, Spain
J. Agramunt - Inst Fis Corpuscular, Valencia, Spain
A. Algora - Inst Fis Corpuscular, Valencia, Spain
V. Guadilla - Inst Fis Corpuscular, Valencia, Spain
A. Montaner-Piza - Inst Fis Corpuscular, Valencia, Spain
A. I. Morales - Inst Fis Corpuscular, Valencia, Spain
S. E. A. Orrigo - Inst Fis Corpuscular, Valencia, Spain
B. Rubio - Inst Fis Corpuscular, Valencia, Spain
Y. Fujita - Osaka University
M. Tanaka - Osaka University
W. Gelletly - Osaka University
P. Aguilera - Comis Chilena Energia Nucl, Santiago, Chile
F. Molina - Comis Chilena Energia Nucl, Santiago, Chile
F. Diel - University of Cologne
D. Lubos - Ludwig Maximilian University of Munich
G. de Angelis - Ist Nazl Fis Nucl, Lab Nazl Legnaro, Bologna, Italy
D. Napoli - Ist Nazl Fis Nucl, Lab Nazl Legnaro, Bologna, Italy
C. Borcea - Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
A. Boso - Ist Nazl Fis Nucl, Sez Padova, Padua, Italy
R. B. Cakirli - Istanbul University
E. Ganioglu - Istanbul University
J. Chiba - Tokyo Univ Sci, Dept Phys, Tokyo, Japan
D. Nishimura - Tokyo Univ Sci, Dept Phys, Tokyo, Japan
H. Oikawa - Tokyo Univ Sci, Dept Phys, Tokyo, Japan
Y. Takei - The University of Tokyo
S. Yagi - The University of Tokyo
K. Wimmer - The University of Tokyo
G. de France - Grand Accelerateur Natl Ions Lourds, Caen, France
S. Go - University of Tennessee at Knoxville
B. A. Brown - Mayville State University
Publication Details: Acta physica Polonica, B, Vol.51(3), pp.577-585
Publisher: Jagiellonian Univ Press
Number of pages: 9
Date published: 01/01/2020
Grant note: Max-Planck Partner group NP0702-RIBF4R1-01; NP1112-RIBF82; NP1112-RIBF93 / RIBF UNKP-19-4-DE-65 / New National Excellence Program of the Ministry for Innovation and Technology 25247045 / JSPS KAKENHI; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science; Grants-in-Aid for Scientific Research (KAKENHI) PHY1404442 / NSF; National Science Foundation (NSF) Janos Bolyai research fellowship of the Hungarian Academy of Sciences; Hungarian Academy of Sciences 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 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) BYP53195 / Istanbul University Scientific Project Unit SEV-2014-0398 / Centro de Excelencia Severo Ochoa del IFIC NN128072 / NKFIH; National Research, Development & Innovation Office (NRDIO) - Hungary Junta para la Ampliacion de Estudios Programme (CSIC JAE-Doc contract) - FSE ST/F012012/1 / UK Science and Technology Facilities Council (STFC); UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC)
Identifiers: 99822763102346
Academic Unit: School of Maths and Physics
Language: English
Resource Type: Journal article

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

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