SIMILARITIES BETWEEN THE LATTICE GAS MODEL AND SOME OTHER MODELS OF NUCLEAR MULTIFRAGMENTATION

摘要

We continue our development of the nuclear lattice gas model by exploring links and similarities with other theoretical approaches to nuclear multifragmentation: the percolation model and the statistical multifragmentation model. It is shown that there exists a limit where the lattice gas model reduces to the percolation model. The similarity between the lattice gas model and the statistical multifragmentation model is more indirect and we utilize the equations of state in the two models. By using the law of partial pressures we obtain P-rho diagrams for the statistical multifragmentation model and find that these are remarkably similar to those obtained in the lattice gas model via an exact evaluation of the nuclear partition function on the lattice. For completeness, we also compute the P-rho diagram for a system obeying pure classical molecular dynamics with a simple two-body force. (C) 1997 Elsevier Science B.V. [References: 24]