Author/Authors :
Liu، نويسنده , , Z. and Kurcewicz، نويسنده , , J. and Woods، نويسنده , , P.J. and Mazzocchi، نويسنده , , C. and Attallah، نويسنده , , F. and Badura، نويسنده , , Kevin E. and Davids، نويسنده , , C.N. and Davinson، نويسنده , , T. and Dِring، نويسنده , , J. and Geissel، نويسنده , , H. and Gَrska، نويسنده , , M. and Grzywacz، نويسنده , , R. and Hellstrِm، نويسنده , , M. and Janas، نويسنده , , Z. and Karny، نويسنده , , M. and Korgul، نويسنده , , A. and M، نويسنده ,
Abstract :
Charged-particle decay spectroscopy of heavy suburanium isotopes produced by projectile fragmentation of 1 GeV/u 238U was tested using a simple implantation–decay set-up equipped with fast-reset preamplifiers. The products were separated and identified with the GSI fragment separator (FRS) and implanted into a stack of Si detectors. Measurements were performed of implantation decay correlations of nuclei with half-lives in the range of 0.1–100 ms. Yields of very neutron-deficient protactinium, thorium and actinium isotopes were measured and yield extrapolations imply that with the availability of a beam intensity of 109 ions/s, projectile fragmentation of relativistic 238U can be an effective method to access new nuclear species including possible proton emitters in the suburanium region.
Keywords :
Suburanium isotopes , ? radioactivity , p radioactivity , Projectile-fragmentation
