Phys.Rev. C 100, 044311 (2019)

L.Sinclair, R.Wadsworth, J.Dobaczewski, A.Pastore, G.Lorusso, H.Suzuki, D.S.Ahn, H.Baba, F.Browne, P.J.Davies, P.Doornenbal, A.Estrade, Y.Fang, N.Fukuda, J.Henderson, T.Isobe, D.G.Jenkins, S.Kubono, Z.Li, D.Lubos, S.Nishimura, I.Nishizuka, Z.Patel, S.Rice, H.Sakurai, Y.Shimizu, P.Schury, H.Takeda, P.-A.Soderstrom, T.Sumikama, H.Watanabe, V.Werner, J.Wu, Z.Y.Xu

Half-lives of ⁷³Sr and ⁷⁶Y and the consequences for the proton dripline

NUCLEAR REACTIONS ⁹Be(¹²⁴Xe, X)⁶⁷As/⁶⁸As/⁶⁹As/⁷⁰As/⁶⁸Se/⁶⁹Se/⁷⁰Se/⁷¹Se/⁷²Se/⁷⁰Br/⁷¹Br/⁷²Br/⁷³Br/⁷¹Kr/⁷²Kr/⁷³Kr/⁷⁴Kr/⁷³Sr/⁷⁴Sr/⁷⁵Sr/⁷⁴Rb/⁷⁵Rb/⁷⁶Y, E=345 MeV/nucleon; measured reaction products, yields, particle identification spectra A/Q versus Z using, β and γ radiation using BigRIPS and the Zerodegree spectrometer (ZDS) for the identification of ions by Z and A/Q through the ΔE-Bρ-TOF method, and β-counting system WAS3ABi with the γ-ray detection array EURICA at RIBF-RIKEN facility. ⁷⁰Br, ⁷¹Kr, ^73,74Sr, ⁷⁵Sr, ^74,75Rb, ⁷⁶Y; measured half-lives of the decays of the ground states, and compared with available literature values; deduced proton drip line. ⁷³Sr, ⁷⁶Y; identified new isotopes. ⁷²Rb, ⁷⁶Y; calculated neutron and proton single-particle levels and deformation energies as functions of deformation β calculated using Skyrme functional UNEDF0; discussed prominent proton decay mode for ⁷²Rb in contrast to mainly β⁺ decay for ⁷⁶Y, configurations.

doi: 10.1103/PhysRevC.100.044311