The equation of state of asymmetric nuclear matter is still controversial, as predictions at subsaturation as well as above normal density widely diverge. We discuss several experimental results measured in heavy-ion collisions with the INDRA array in the incident energy range 5–80AMeV. In particular an estimate of the density dependence of the symmetry energy is derived from isospin diffusion results compared with a transport code: the potential part of the symmetry energy linearly increases with the density. We demonstrate that isospin equilibrium is reached in mid-central collisions for the two reactions Ni+Au at 52AMeV and Xe + Sn at 32AMeV. New possible variables and an improved modelization to investigate symmetry energy are discussed
Isospin effects and symmetry energy studies with INDRA / G., Ademard; B., Borderie; A., Chbihi; O., Lopez; P., Napolitani; M. F., Rivet; M., Boisjoli; R., Bougault; F., Gagnon Moisan; R., Bougault; J. D., Frankland; E., Galichet; D., Gruyer; D., Guinety; M., Kabtoul; G., Lehaut; P., Lautesse; LA COMMARA, Marco; N., Le Neindre; P., Marini; M., Pârlog; P., Pawlowski; Rosato, Elio; R., Roy; Spadaccini, Giulio; E., Vient; Vigilante, Mariano; J. P., Wieleczko. - In: THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI. - ISSN 1434-6001. - 50:(2014). [10.1140/epja/i2014-14033-x]
Isospin effects and symmetry energy studies with INDRA
LA COMMARA, MARCO;ROSATO, ELIO;SPADACCINI, GIULIO;VIGILANTE, MARIANO;
2014
Abstract
The equation of state of asymmetric nuclear matter is still controversial, as predictions at subsaturation as well as above normal density widely diverge. We discuss several experimental results measured in heavy-ion collisions with the INDRA array in the incident energy range 5–80AMeV. In particular an estimate of the density dependence of the symmetry energy is derived from isospin diffusion results compared with a transport code: the potential part of the symmetry energy linearly increases with the density. We demonstrate that isospin equilibrium is reached in mid-central collisions for the two reactions Ni+Au at 52AMeV and Xe + Sn at 32AMeV. New possible variables and an improved modelization to investigate symmetry energy are discussedI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
