Isospin diffusion in 58Ni-induced reactions at intermediate energies
- Galichet, E.
- Rivet, Marie-France
- Borderie, B.
- Colonna, M.
- Bougault, R.
- Durand, D.,
- Le Neindre, N.
- Lopez, O.
- Manduci, L.
- Vient, E.
- Chbihi, A.
- Frankland, J.D.
- Wieleczko, J.P.
- Dayras, R.
- Volant, C.
- Guinet, D. C. R.
- Lautesse, P.
- Pârlog, M.
- Rosato, E.
- Vigilante, M.
DOIAbstract
International audienceIsospin 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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