<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>β</mi></math> decay of the very neutron-deficient <math xmlns="http://www.w3.org/1998/Math/MathML"><mmultiscripts><mi>Ge</mi><mprescripts></mprescripts><none></none><mn>60</mn></mmultiscripts></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mmultiscripts><mi>Ge</mi><mprescripts></mprescripts><none></none><mn>62</mn></mmultiscripts></math> nuclei

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

doi:10.1103/PhysRevC.103.014324

$β$ decay of the very neutron-deficient ${}^{60}{Ge}$ and ${}^{62}{Ge}$ nuclei

S. E. A. Orrigo ^1,*, B. Rubio¹, W. Gelletly^1,2, P. Aguilera^1,3, A. Algora^1,4, A. I. Morales¹, J. Agramunt¹, D. S. Ahn⁵, P. Ascher⁶ et al.

B. Blank⁶, C. Borcea⁷, A. Boso⁸, R. B. Cakirli⁹, J. Chiba¹⁰, G. de Angelis¹¹, G. de France¹², F. Diel¹³, P. Doornenbal⁵, Y. Fujita¹⁴, N. Fukuda⁵, E. Ganioğlu⁹, M. Gerbaux⁶, J. Giovinazzo⁶, S. Go¹⁵, T. Goigoux⁶, S. Grévy⁶, V. Guadilla¹, N. Inabe⁵, G. G. Kiss^4,5, T. Kubo⁵, S. Kubono⁵, T. Kurtukian-Nieto⁶, D. Lubos¹⁶, C. Magron⁶, F. Molina³, A. Montaner-Pizá¹, D. Napoli¹¹, D. Nishimura¹⁷, S. Nishimura⁵, H. Oikawa¹⁰, V. H. Phong^5,18, H. Sakurai^5,19, Y. Shimizu⁵, C. Sidong⁵, P.-A. Söderström⁵, T. Sumikama⁵, H. Suzuki⁵, H. Takeda⁵, Y. Takei¹⁰, M. Tanaka¹⁴, J. Wu⁵, and S. Yagi¹⁰

¹Instituto de Física Corpuscular, CSIC-Universidad de Valencia, E-46071 Valencia, Spain
²Department of Physics, University of Surrey, Guildford GU2 7XH, Surrey, United Kingdom
³Comisión Chilena de Energía Nuclear, Casilla 188-D, Santiago, Chile
⁴Institute of Nuclear Research of the Hungarian Academy of Sciences, Debrecen, H-4026, Hungary
⁵RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
⁶Centre d'Etudes Nucléaires de Bordeaux Gradignan, CNRS/IN2P3, Université de Bordeaux, 33175 Gradignan Cedex, France
⁷National Institute for Physics and Nuclear Engineering IFIN-HH, P. O. Box MG-6, Bucharest-Magurele, Romania
⁸INFN Sezione di Padova and Dipartimento di Fisica, Universitá di Padova, I-35131 Padova, Italy
⁹Department of Physics, Istanbul University, Istanbul 34134, Turkey
¹⁰Department of Physics, Tokyo University of Science, Noda, Chiba 278-8510, Japan
¹¹Laboratori Nazionali di Legnaro INFN, I-35020 Legnaro, Padova, Italy
¹²Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Bvd Henri Becquerel, 14076 Caen, France
¹³Institute of Nuclear Physics, University of Cologne, D-50937 Cologne, Germany
¹⁴Department of Physics, Osaka University, Toyonaka, Osaka 560-0043, Japan
¹⁵Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200, USA
¹⁶Physik Department E12, Technische Universität München, D-85748 Garching, Germany
¹⁷Department of Natural Sciences, Tokyo City University, 1-28-1 Tamazutsumi, Setagaya-ku, Tokyo 158-8557, Japan
¹⁸Faculty of Physics, VNU University of Science, 334 Nguyen Trai, Thanh Xuan, Hanoi, Vietnam
¹⁹Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan

^*sonja.orrigo@ific.uv.es

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Phys. Rev. C 103, 014324 – Published 29 January, 2021

DOI: https://doi.org/10.1103/PhysRevC.103.014324

Abstract

We report here the results of a study of the $β$ decay of the proton-rich Ge isotopes, ${}^{60}{Ge}$ and ${}^{62}{Ge}$ , produced in an experiment at the RIKEN Nishina Center. We have improved our knowledge of the half-lives of ${}^{62}{Ge}$ [73.5(1) ms] and ${}^{60}{Ge}$ [25.0(3) ms] and its daughter nucleus, ${}^{60}{Ga}$ [69.4(2) ms]. We measured individual $β$ -delayed proton and $γ$ emissions and their related branching ratios. Decay schemes and absolute Fermi and Gamow-Teller transition strengths have been determined. The mass excesses of the nuclei under study have been deduced. A total $β$ -delayed proton-emission branching ratio of 67(3)% has been obtained for ${}^{60}{Ge}$ . New information has been obtained on the energy levels populated in ${}^{60}{Ga}$ and on the ${1 / 2}^{-}$ excited state in the $β p$ daughter ${}^{59}{Zn}$ . We extracted a ground state–to–ground state feeding of 85.3(3)% for the decay of ${}^{62}{Ge}$ . Eight new $γ$ lines have been added to the deexcitation of levels populated in the ${}^{62}{Ga}$ daughter.

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3 March, 2022

Correction: The omission of a support statement in the Acknowledgments has been fixed.

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$β$ decay of the very neutron-deficient ${}^{60}{Ge}$ and ${}^{62}{Ge}$ nuclei

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β decay of the very neutron-deficient Ge60 and Ge62 nuclei

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$β$ decay of the very neutron-deficient ${}^{60}{Ge}$ and ${}^{62}{Ge}$ nuclei