Dynamical aspects of isoscaling

ORAL

Abstract

The origin and dynamical evolution of isoscaling was studied using classical molecular dynamics simulations of 40Ca + 40Ca, 48Ca + 48Ca, and 52Ca + 52Ca, at beam energies ranging from 20 MeV/A to 85 MeV/A. The analysis included a study of the time evolution of this effect. Isoscaling was observed to exist in these reactions from the very early primary isotope distributions (produced by highly non-equilibrated systems) all the way to asymptotic times. This indicates that isoscaling is independent of quantum effects and thermodynamical equilibrium. In summary, collision-produced isoscaling appears to be due more to the mere partitioning of the proton-neutron content of the participant nuclei, than to specific details of the reaction dynamics.

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Authors

  • Claudio Dorso

    • Departamento de Fisica, FCEN, Universidad de Buenos Aires, Nunez, Argentina
    • Departamento de Fisica, FCEN, Universidad de Buenos Aires

  • Christian Escudero

    • Department of Physics, University of Texas at El Paso, El Paso, Texas 79968, U.S.A.

  • M. Ison

    • Departamento de Fisica, FCEN, Universidad de Buenos Aires, Nunez, Argentina

  • Jorge Lopez

    • Department of Physics, University of Texas at El Paso, El Paso, Texas 79968, U.S.A.
    • Department of Physics, University of Texas at El Paso