Quasiclassical model of intermediate velocity particle production in asymmetric...

A. CHERNOMORETZ; L. GINGRAS; Y. LAROCHELLE; L. BEAULIEU; R. ROY; C. ST-PIERRE; C.O. DORSO

Physical Review C

Año: 2002 vol. 65 p. 546131 - 546137

0556-2813

The particle emission at intermediate velocities in mass asymmetric reactions is studied within the frameworkof classical molecular dynamics. Two reactions in the Fermi energy domain were modeled, 58Ni1C and58Ni1Au at 34.5 MeV/nucleon. The availability of microscopic correlations at all times allowed a detailedstudy of the fragment formation process. Special attention was paid to the physical origin of fragments andemission timescales, which allowed us to disentangle the different processes involved in the midrapidityparticle production. Consequently, a clear distinction between a prompt preequilibrium emission and a delayedaligned asymmetric breakup of the heavier partner of the reaction was achieved