Author/Authors :
Gary B. Blank، نويسنده , , S. Andriamonje، نويسنده , , S. Czajkowski، نويسنده , , F. Davi، نويسنده , , R. Del Moral، نويسنده , , C. Donzaud، نويسنده , , J.P. Dufour، نويسنده , , A. Fleury، نويسنده , , A. Grewe، نويسنده , , R. Grzywacz، نويسنده , , A. Heinz، نويسنده , , Z. Hanas، نويسنده , , A. Junghans، نويسنده , , M. Lewitowicz، نويسنده , , A. Musquère، نويسنده , , M.S. Pravikoff، نويسنده , , M. Pfützner، نويسنده , , J.-E. Sauvestre، نويسنده ,
Abstract :
In an experiment at the SISSI/LISE facility of GANIL, we produced proton-rich isotopes in the selenium-to-strontium region by projectile fragmentation of a 78Kr primary beam at 73 MeV/nucleon. The emission of β-delayed protons from 67Se, 71Kr, and 75Sr was observed for the first time and the corresponding branching ratios were determined. The proton energy spectra were compared to predictions of a statistical model. The half-lives of 67Se, 71Kr, and 75Sr were deduced from the time characteristics of the observed proton activity. The half-life of 75Sr was measured for the first time. For 67Se and 71Kr, the obtained half-lives are compared to previous measurements.
