DENSITY DEPENDENCE, AND VALIDITY OF SEMI-EMPIRICAL FORMULA
5 2 Center for Excellence in Astronomy and Astrophysics (CEAA-RIAAM)-Maragha, P.O. Box 6 55134-441, Maragha 55177-36698, Iran 7 11 clear potential. We have also investigated the temperature and density dependence of 12 asymmetry energy. Our results show that the asymmetry energy of nuclear matter de- 13 pends on both density and temperature. We have also studied the effects of different 14 terms in the asymmetry energy of nuclear matter. These investigations indicate that 15 at different densities and temperatures, the contribution of parabolic term is very sub- 16 stantial with respect to the other terms. Therefore, we can conclude that the parabolic 17 approximation is a relatively good estimation, and our calculated binding energy of 18 asymmetric nuclear matter is in a relatively good agreement with that of semi-empirical 19 mass formula. However, for the accurate calculations, it is better to consider the effects 20 of other terms. 21