One-and two-body dissipation in heavy-ion collisions

Pal, Santanu ; Ganguly, N. K. (1981) One-and two-body dissipation in heavy-ion collisions Nuclear Physics - Section A, 370 (1). pp. 175-188. ISSN 0375-9474

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A microscopic theory has been formulated for one- and two-body dissipation in collisions between two heavy nuclei. With a nucleon-nucleon interaction as the basic perturbation in a density matrix approach with "linear response" approximations, the one- and two-body nuclear friction coefficients for the 40Ca + 40Ca system have been calculated and their dependence on relative kinetic energy and smearing of nuclear single-particle states was obtained. The results of our calculation show that: (a) the combined one- and two-body friction coefficients compare favourably with phenomenological values, (b) the one-body dissipation is more effective than two-body in kinetic energy damping, while both the mechanisms are comparable for the damping of relative angular momentum, (c) the importance of the two-body friction compared to one-body increases at higher relative kinetic energies and (d) the effect of introducing a smearing in nuclear levels appears as a lowering of nuclear friction.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:12157
Deposited On:10 Nov 2010 04:06
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