Effects of geometric constraints on the nuclear multifragmentation process

Details Effects of geometric constraints on the nuclear multifragmentation process Effects of geometric constraints on the nuclear multifragmentation process

2007-06-04

arxiv.org/abs/0706.0467v1

Phys.Rev.C76:024614,2007

Physics

Nuclear Physics

Nuclear Theory

16 pages, 5 figures

Scientific paper

10.1103/PhysRevC.76.024614

We include in statistical model calculations the facts that in the nuclear multifragmentation process the fragments are produced within a given volume and have a finite size. The corrections associated with these constraints affect the partition modes and, as a consequence, other observables in the process. In particular, we find that the favored fragmenting modes strongly suppress the collective flow energy, leading to much lower values compared to what is obtained from unconstrained calculations. This leads, for a given total excitation energy, to a nontrivial correlation between the breakup temperature and the collective expansion velocity. In particular we find that, under some conditions, the temperature of the fragmenting system may increase as a function of this expansion velocity, contrary to what it might be expected.

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