Production cross-sections of neutron-rich Pb and Bi isotopes in the fragmentation of 238U

NSCL, Michigan State University East Lansing MI 48824 USA
European Physical Journal A (Impact Factor: 2.74). 12/2009; 42(3):485-488. DOI: 10.1140/epja/i2009-10856-8


Neutron-rich lead and bismuth isotopes have been produced by cold-fragmentation reactions induced by 238U projectiles at 1A GeV impinging on a beryllium target. The high-resolving power FRagment Separator (FRS) at GSI allowed
us to identify and determine the production cross-sections of 43 nuclei, nine of them for the first time ( 216, 217, 218, 219Pb and 219, 220, 221, 222, 223Bi . These data are compared to other previously measured cross-sections in similar reactions and model calculations.

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