Author/Authors :
J. Benlliure، نويسنده , , K.-H. Schmidt، نويسنده , , D. Cortina Gil، نويسنده , , T. Enqvist، نويسنده , , F. Farget، نويسنده , , A. Heinz، نويسنده , , A.R. Junghans، نويسنده , , J. Pereira، نويسنده , , J. Taieb، نويسنده ,
Abstract :
The production cross sections and longitudinal-momentum distributions of very neutron-rich isotopes have been investigated in the fragmentation of a 950 A MeV 179Au beam in a beryllium target. Seven new isotopes (193Re, 194Re, 191W, 192W, 189Tl, 187Hf and 188Hf) and the five-proton-removal channel were observed for the first time. The reaction mechanism leading to the formation of these very neutron-rich isotopes is explained in terms of the cold-fragmentation process. An analytical model describing this reaction mechanism is presented.
Keywords :
Model description , Fragmentation reactions , Production of neutron-rich isotopes , Relativistic heavy-ion collisions
