Phys.Rev. C 103, 014324 (2021)

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.Ganioglu, M.Gerbaux, J.Giovinazzo, S.Go, T.Goigoux, S.Grevy, V.Guadilla, N.Inabe, G.G.Kiss, T.Kubo, S.Kubono, T.Kurtukian-Nieto, D.Lubos, C.Magron, F.Molina, A.Montaner-Piza, D.Napoli, D.Nishimura, S.Nishimura, H.Oikawa, V.H.Phong, H.Sakurai, Y.Shimizu, C.Sidong, P.-A.Soderstrom, T.Sumikama, H.Suzuki, H.Takeda, Y.Takei, M.Tanaka, J.Wu, S.Yagi

β decay of the very neutron-deficient ⁶⁰Ge and ⁶²Ge nuclei

RADIOACTIVITY ⁵⁹Zn, ⁶⁰Ga, ^60,62Ge(EC), (β⁺); ⁶²Ge(β⁺p)[^60,62Ge activities from ⁹Be(⁷⁸Kr, X), E=345 MeV/nucleon at RIBF-RIKEN]; measured Eγ, Iγ, Ep, Ip, β⁺γ-, β⁺pγ- and γγ-coin, γ(implants)- and p(implants)-correlations, half-lives of decays of ⁶⁰Ga, ^60,62Ge using the WAS3ABi and EURICA arrays. ⁶⁰Ge; deduced β⁺-delayed proton branching ratio. ^60,62Ga, ^59,60Zn, ⁵⁹Cu; deduced levels, J, π, β feedings, Fermi and B(F) and Gamow-Teller B(GT) transition strengths, mass excesses of ^60,62Ge, and ⁶⁰Ga by analysis of IMME for A=60 nuclei. Comparison with previous experimental data.

NUCLEAR REACTIONS ⁹Be(⁷⁸Kr, X), E=345 MeV/nucleon; measured reaction products, Z versus A/Q identification plot for nuclei of Z=28-36 and A/Q=1.85-1.95, with fragments separated using the BigRIPS separator and ZeroDegree spectrometer at RIBF-RIKEN facility, with main emphasis on the production of ^60,62Ge.

doi: 10.1103/PhysRevC.103.014324