Original scientific paper
A microscopic model for calculating the initial number of excitons in nucleus-nucleus collisions
Nikola Cindro
; Ruđer Bošković Institute, 41001 Zagreb, POB 1016, Croatia
Emil Betak
; Institute of Physics, Slovak Academy of Science, 84228 Bratislava, Czecho-Slovakia
Milorad Korolija
; Ruđer Bošković Institute, 41001 Zagreb, POB 1016, Croatia
James J. Griffin
; Department of Physics, University of Maryland, College Park, MD 20742, U.S.A.
Abstract
A microscopic model for estimating n0, the initial exciton number used in calculating pre-equilibrium emission from heavy-ion reactions, is presented. The model follows the evolution of the geometrical and phase spaces during the process of fusioning of the target and the projectile. A good agreement is found between the calculated values of n0 and the empirical values extracted from fits to nucleon spectra; empirical trends of physical quantities involving n0 are reproduced. An approximate expression for calculating n0 as a function of the mass and energy of the colliding system is given.
Keywords
Hrčak ID:
305567
URI
Publication date:
1.2.1992.
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