Abstract
Fragment average isospin distributions are investigated within a microcanonical multifragmentation model in different regions of the phase diagram. The results indicate that in the liquid phase versus Z is monotonically increasing, in the phase coexistence region it has a rise-and-fall shape, and in the gas phase it is constant. Deviations from this behavior may manifest at low fragment multiplicity as a consequence of mass-charge conservation. Characterization of the “free” and “bound” phase functions of the fragment charge reconfirms the neutron enrichment of the free phase with respect to the bound one irrespectively of the localization of the multifragmentation event in the phase diagram.
5 More- Received 14 April 2005
DOI:https://doi.org/10.1103/PhysRevC.73.014606
©2006 American Physical Society