Intermediate mass fragments emission in the reaction 96 MeV ¹⁹F on ¹²C

Abstract

The energy distributions of the complex fragments (3≤Z≤11) emitted in the reaction ¹⁹F(96 MeV) + ¹²C have been measured in the angular range 10°≤∅_lab≤60°. The lighter fragments (3≤Z≤6) have been found to be emitted predominantly due to the asymmetric fissionlike decay of the compound nucleus, whereas the heavier fragments (Z≥10) have been identified as evaporation residues. The shapes of the fragment energy distributions, as well as the total elemental yields for the lighter fragments (3≤Z≤6) have been explained fairly well by the asymmetric binary fission model. The binary fragment yields from the reaction ¹⁹F(96 MeV) + ¹²C have been compared with those obtained in α(60 MeV) + ²⁷Al and ⁷Li(47 MeV) + ²⁴Mg reactions, all producing the same composite ³¹P at same excitation energy. No significant entrance channel asymmetry dependence has been observed.