Quantum molecular dynamics simulation of expanding nuclear matter and nuclear multifragmentation - art. no. 024602

Multifragmentation resulting from an expanding nuclear matter is investigat ed on the basis of quantum molecular dynamics. In particular, the dependenc e of the fragment mass distribution on the initial temperature (T-init) and the radial Row velocity (h) is studied. When h is large, the distribution shows exponential shape, whereas for small h, it obeys the power law. Altho ugh the power law is what Fisher's droplet model predicts, the fragmentatio n mechanism in an expanding system is found to be different from the one in a thermally equilibrated system.