Isospin Diffusion in $^{58}$Ni-Induced Reactions at Intermediate Energies

E. Galichet; Marie-France Rivet; B. Borderie; M. Colonna; R. Bougault; D. Durand; N. Le Neindre; O. Lopez; L. Manduci; E. Vient; A. Chbihi; J. D. Frankland; J. P. Wieleczko; R. Dayras; C. Volant; D. C. R. Guinet; P. Lautesse; M. Parlog; E. Rosato; M. Vigilante

doi:10.1142/s021830131001593x

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arXiv · 1003.1082

Isospin Diffusion in $^{58}$Ni-Induced Reactions at Intermediate Energies

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Abstract

Isospin diffusion is probed as a function of the dissipated energy by studying two systems $^{58}$Ni+$^{58}$Ni and $^{58}$Ni+$^{197}$Au, over the incident energy range 52-74\AM. Experimental data are compared with the results of a microscopic transport model with two different parameterizations of the symmetry energy term. A better overall agreement between data and simulations is obtained when using a symmetry term with a potential part linearly increasing with nuclear density. The isospin equilibration time at 52 \AM{} is estimated to 130$\pm$10 fm/$c$.

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E. Galichet, Marie-France Rivet, B. Borderie, M. Colonna, R. Bougault, D. Durand, N. Le Neindre, O. Lopez, L. Manduci, E. Vient, A. Chbihi, J. D. Frankland, J. P. Wieleczko, R. Dayras, C. Volant, D. C. R. Guinet, P. Lautesse, M. Parlog, E. Rosato, M. Vigilante. 2010-03-04. Isospin Diffusion in $^{58}$Ni-Induced Reactions at Intermediate Energies. https://doi.org/10.1142/s021830131001593x

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