Isoscaling in light-ion induced reactions and its statistical interpretation

• DOI: 10.1103/physrevc.65.044610
• Publication Date: 2002-07-27T00:05:41Z
• Authors: A. S. Botvina; O. V. Lozhkin; W. Trautmann
• Keywords: Nuclear Theory (nucl-th); Nuclear Theory; 0103 physical sciences; FOS: Physical sciences; Nuclear Experiment (nucl-ex); Nuclear Experiment; 01 natural sciences

Isotopic effects observed in fragmentation reactions induced by protons, deuterons, and $\ensuremath{\alpha}$ particles of incident energies between 660 MeV 15.3 GeV on ${}^{112}\mathrm{Sn}$ ${}^{124}\mathrm{Sn}$ targets are discussed. The exponential scaling the yield ratios with third component fragment isospin ${t}_{3}=(N\ensuremath{-}Z)/2$ is all reactions, parameters that depend energy. Breakup temperatures for these deduced from double isotopic yields tested their relation isoscaling parameters. quantum-statistical statistical multifragmentation (SMM) models used interpreting results. can be understood as a consequence origin emitted fragments reactions. SMM analysis shows exponent describing behavior proportional to strength symmetry term binding Using this result, symmetry-term coefficient $\ensuremath{\gamma}\ensuremath{\approx}22.5\mathrm{MeV}$ at breakup experimental data. This close standard value supports assumptions configuration. An alternative method determining symmetry-energy coefficient, using isotope distribution widths, also