New isotopes from ^{78}kr fragmentation and the ending point of the astrophysical rapid-proton-capture process
Langue
en
Article de revue
Ce document a été publié dans
Physical Review Letters. 1995, vol. 74, p. 4611-4614
American Physical Society
Résumé en anglais
In an experiment at the SISSI/LISE facility of GANIL, we used the projectile fragmentation of a 78Kr primary beam at 73 MeV/nucleon to produce new isotopes of astrophysical interest. We obtained clear evidence for the ...Lire la suite >
In an experiment at the SISSI/LISE facility of GANIL, we used the projectile fragmentation of a 78Kr primary beam at 73 MeV/nucleon to produce new isotopes of astrophysical interest. We obtained clear evidence for the existence of the five new isotopes 60Ga, 64As, 69,70Kr, and 74Sr. However, we did not find any evidence for 69Br, whereas comparable nuclei were observed with more than 1000 counts. The isotope 69Br is thus deduced to be a proton-unbound nucleus with a half-life shorter than about 100 ns. The influence of these results on our understanding of the astrophysical RP process is discussed.< Réduire
Origine
Importé de halUnités de recherche