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

ArticleinEuropean Physical Journal A 42(3):485-488 · December 2009with7 Reads
Impact Factor: 2.74 · DOI: 10.1140/epja/i2009-10856-8


    Neutron-rich lead and bismuth isotopes have been produced by cold-fragmentation reactions induced by U-238 projectiles at 1 AGeV 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 (Pb-216,Pb-217,Pb-218,Pb-219 and Bi-219,Bi-220,Bi-221,Bi-222,Bi-223). These data are compared to other previously measured cross-sections in similar reactions and model calculations.