arXiv:0711.3382·v2·Nuclear Theory
The role of bulk energy in nuclear multifragmentation
N. Buyukcizmeci (1)🇷🇺 · A.S.Botvina (2,3)🇹🇷 · I.N. Mishustin (3,4)🇩🇪 · R. Ogul (1) ((1)Department of Physics, University of Selcuk, Konya, Turkey, (2)Institute for Nuclear Research, Russian Academy of Sciences, Moscow, Russia, (3)Frankfurt Institute for Advanced Studies, J.W. Goethe University, Frankfurt am Main, Germany, (4)Kurchatov Institute, Russian Research Center, Moscow, Russia)🇹🇷
Abstract
Because of thermal expansion and residual interactions, hot nuclear fragments produced in multifragmentation reactions may have lower nucleon density than the equilibrium density of cold nuclei. In terms of liquid-drop model this effect can be taken into account by reducing the bulk energy of fragments. We study the influence of this change on fragment yields and isotope distributions within the framework of the statistical multifragmentation model. Similarities and differences with previously discussed modifications of symmetry and surface energies of nuclei are analyzed.
Comments: 8 pages, 7 figures, to be published in Phys. Rev. C