

FIZIKA B 5 (1996) 1, 2938 THE ROLE OF THE JWKB TREATMENT IN THE SHARP CUTOFF APPROXIMATION FOR HEAVY IONS COLLISIONSSMAIL BOUGOUFFA, XUAN CHUAN CAO and PAUL FAUCHER Received 12 August 1995We show how an adiabatic approximation to the usual coupledchannels formalism gives a simple way of calculation and understanding the heavyion fusion inelastic crosssection. We did the calculation for the ^{58}Ni + ^{58}Ni system by considering only one transition, the groundstate to groundstate transition. A very simple method to calculate the abovebarrier inelastic crosssection has been proposed, which can be handled entirely within the framework of the directreaction theory. The essence of the method is the role of the JWKB treatment in the determination of the partial waves which contribute to the fusion. We apply the schematical model to the calculation of inelastic crosssection for the system ^{58}Ni + ^{58}Ni. Results of the model are extensively discussed. UDC 539.171

Copyright by The Croatian Physical Society
