Comment on "Symmetry energy and the isospin dependent equation of state"

Details Comment on "Symmetry energy and the isospin dependent equation of state" Comment on "Symmetry energy and the isospin dependent equation of state"

2005-07-12

arxiv.org/abs/nucl-ex/0507018v2

Physics

Nuclear Physics

Nuclear Experiment

6 pages, 1 figure

Scientific paper

In a recent paper, Shetty et al [Phys. Rev. C 70, 011601R (2004)] reported that the experimental isoscaling parameters aexp from several reactions favor the Gogny-AS effective nucleon-nucleon interaction over Gogny interaction. This conclusion is reached by comparing data to Antisymmetrized Molecular Dynamics (AMD) predictions for collisions of calcium isotopes. The specific simulations produce excited fragments at t=300 fm/c before they decay. Sequential decay calculations of the excited fragments suggest that the isoscaling parameter apri from the AMD calculations could be reduced by as much as 50%. We also explore the linear equation used to relate other reactions to the AMD calculations for Ca+Ca collisions. The uncertainty in the relation is larger than the differences between the predicted apri when using Gogny and Gogny-AS interactions.

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