Author/Authors :
O. Sorlin، نويسنده , , C. Donzaud، نويسنده , , L. Axelsson، نويسنده , , M. Belleguic، نويسنده , , R. Beraud، نويسنده , , C. Borcea، نويسنده , , G. Canchel، نويسنده , , E. Chabanat، نويسنده , , J.M. Daugas، نويسنده , , A. Emsallem، نويسنده , , M. Girod، نويسنده , , D. Guillemaud-Mueller، نويسنده , , K.-L. Kratz، نويسنده , , S. Leenhardt، نويسنده , , M. Lewitowicz، نويسنده , , C. Longour، نويسنده , , M.J. Lopez، نويسنده , , F. de Oliveira Santos، نويسنده , , L. Petizon، نويسنده , , B. Pfeiffer، نويسنده , , et al.، نويسنده ,
Abstract :
The neutron-rich 57−59Ti, 59−62V, 61−64Cr, 63−66Mn, 65−68Fe, 67−70Co have been produced at GANIL via interactions of a 60.4 MeV/u 86Kr34+ with a 58Ni target. They have been separated by the doubly achromatic spectrometer LISE3. Beta-decay half-lives have been determined for all produced nuclei, and subsequent γ-rays have been observed for the most efficiently produced nuclei. The measured half-lives of vanadium and chromium isotopes are compared to QRPA calculations using ground states deformations from the FRDM or ETFSI models. In an astrophysical context, the short half-lives of 58Ti and 64Cr indicate that these nuclei are potential r-process progenitors, after β-decay, of 58Fe and 64Ni in certain inclusions of meteorites.
Keywords :
61?64Cr , 63?66Mn , 65?68Fe , X) , E=60.4 MeV/nucleon] , ?–?-coinc , View the MathML source , r-process implications , Measured View the MathML source , 57?59Ti , 59?62V