Half-lives of Sr-73 and Y-76 and the consequences for the proton dripline
- Sinclair, L.
- Wadsworth, R.
- Dobaczewski, J.
- Pastore, A.
- Lorusso, G.
- Suzuki, H.
- Ahn, D. S.
- Baba, H.
- Browne, F.
- Davies, P. J.
- Doornenbal, P.
- Estrade, A.
- Fang, Y.
- Fukuda, N.
- Henderson, J.
- Isobe, T.
- Jenkins, D. G.
- Kubono, S.
- Li, Z.
- Lubos, D.
- Nishimura, S.
- Nishizuka, I.
- Patel, Z.
- Rice, S.
- Sakurai, H.
- Shimizu, Y.
- Schury, P.
- Takeda, H.
- Söderström, P-A
- Sumikama, T.
- Watanabe, H.
- Werner, Stefan
- Wu, J.
- Xu, Z. Y.
DOIAbstract
The half-lives of seven nuclei have been determined in the neutron-deficient mass-70 region following their production via fragmentation of a 345 MeV/nucleon Xe-124 primary beam on a 740 mg/cm(2) Be-9 target at the RI Beam Factory, RIKEN. The results include two new (Sr-73 and Y-76) half-lives and a more precise measurement for the ground-state half-life of Sr-74. The new results are discussed with reference to previously published calculations that predict the location of the proton dripline in the light Sr and Y region of the nuclear chart. In addition, differences in the ground-state structure of Rb-72 and Y-76 are discussed with the aid of density functional theory calculations. These provide a possible explanation for why Rb-72 undergo...
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