Eur. Phys. J. A (2003) 18: 639-644
https://doi.org/10.1140/epja/i2003-10091-5

Emission of Li, ^7,9 Be and B fragments in the interaction of ¹² C with ⁹³ Nb between 200 and 400 MeV

¹ University of Cape Town, Cape Town, South Africa
² Dipartimento di Fisica, Universitá di Milano and INFN, Sezione di Milano, Milano, Italia
³ iThemba Laboratory for Accelerator Based Sciences, Somerset West, South Africa
⁴ Schonland Research Centre, Witwatersrand University, Johannesburg, South Africa
⁵ Department of Physics, University of Stellenbosch, Stellenbosch, South Africa

^* e-mail: gadioli@mi.infn.it

Abstract

The double differential cross-sections of Li, ^7,9 Be and B ions emitted in the interaction of ¹² C with ⁹³ Nb at incident energies varying from 200 to 400 MeV show that these intermediate-mass fragments are produced by two different mechanisms: the fragmentation of the projectile and the coalescence of nucleons during the thermalization of the intermediate nuclei produced in the complete and incomplete fusion of carbon and niobium. These results confirm those of previous investigations of our group and are well explained by the theories which we have proposed to describe these two reaction mechanisms.