In this paper we study the emission of 8Begs, B and N fragments in the interaction of 16O ions with 59Co, 93Nb and 197Au at incident energies varying from 6 to 25 MeV/nucleon. The spectra of these fragments, as well as those of C fragments studied in a previous paper, are dominated at forward angles by a component originating from break-up of 16O. At the higher incident energies break-up occurs after quite a sizeable projectile energy loss. Another mechanism which dominates at large emission angles, favours the emission of low-energy fragments and is attributed to the coalescence of nucleons during the cascade of nucleon-nucleon interactions by means of which the excited nuclei produced in the primary two-ion interaction thermalize.
Emission of intermediate mass fragments in the interaction of 16O with 59Co, 93Nb and 197Au / E. Gadioli, G. F. Steyn, F. Albertini, C. Birattari, M. Cavinato, S. H. Connell, A. A. Cowley, E. Fabrici, S. V. F ̈ortsch, E. Gadioli Erba, J. J. Lawrie, M. Pigni, J. P. F. Sellschop, E. Sideras Haddad. - In: THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI. - ISSN 1434-6001. - 17:2(2003), pp. 195-212.
Emission of intermediate mass fragments in the interaction of 16O with 59Co, 93Nb and 197Au
M. Cavinato;
2003
Abstract
In this paper we study the emission of 8Begs, B and N fragments in the interaction of 16O ions with 59Co, 93Nb and 197Au at incident energies varying from 6 to 25 MeV/nucleon. The spectra of these fragments, as well as those of C fragments studied in a previous paper, are dominated at forward angles by a component originating from break-up of 16O. At the higher incident energies break-up occurs after quite a sizeable projectile energy loss. Another mechanism which dominates at large emission angles, favours the emission of low-energy fragments and is attributed to the coalescence of nucleons during the cascade of nucleon-nucleon interactions by means of which the excited nuclei produced in the primary two-ion interaction thermalize.
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