Isospin properties of fragments measured in multifragmentation of 136Xe and 124Xe projectiles in mid-peripheral collisions with a lead target at 1 A GeV were studied within the statistical approach describing the liquid-gas nuclear phase transition. By analyzing the isoscaling phenomenon and the mean N-over-Z ratio of the fragments with Z=10-13 we have concluded that the symmetry energy of hot fragments produced in multifragment environment at subnuclear densities at high temperatures decreases in comparison with cold nuclei.
@article{arxiv.nucl-ex/0507003,
title = {Symmetry energy of fragments produced in multifragmentation},
author = {D. Henzlova and A. S. Botvina and K. -H. Schmidt and V. Henzl and P. Napolitani and M. V. Ricciardi},
journal= {arXiv preprint arXiv:nucl-ex/0507003},
year = {2014}
}
Comments
10 pages, 4 figures, background information on http://www-w2k.gsi.de/charms/