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Production cross-sections of neutron-rich Pb and Bi isotopes in the fragmentation of 238U |
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| Authors: | H Alvarez-Pol J Benlliure E Casarejos L Audouin D Cortina-Gil T Enqvist B Fernández A R Junghans B Jurado P Napolitani J Pereira F Rejmund K -H Schmidt O Yordanov |
| Institution: | 1. Universidade de Santiago de Compostela, E-15782, Santiago de Compostela, Spain 2. IPN Orsay, Campus Paris XI, F-91406, Orsay, France 3. GSI, Planckstrasse 1, D-64291, Darmstadt, Germany 4. University of Washington, Box 354290, 98195, Seattle, WA, USA 5. CENBG, F-33175, Gradignan, France 6. GANIL, 14076, Caen Cedex 5, France |
| Abstract: | 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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