Isospin effects and symmetry energy studies with INDRA
G. Ademard
(1)
,
B. Borderie
(1)
,
A. Chbihi
(2)
,
O. Lopez
(3)
,
P. Napolitani
(1)
,
M. F. Rivet
(1)
,
M. Boisjoli
(2)
,
Eric Bonnet
(2)
,
R. Bougault
(3)
,
J.D. Frankland
(2)
,
E. Galichet
(1, 4)
,
D. Guinet
(5)
,
M. Kabtoul
(3)
,
G. Lehaut
(3)
,
P. Lautesse
(6)
,
M. La Commara
,
N. Le Neindre
(1)
,
P. Marini
(2)
,
M. Pârlog
(3)
,
P. Pawłowski
,
E. Rosato
,
R. Roy
,
E. Spadaccini
,
E. Vient
(3)
,
M. Vigilante
,
J.P. Wieleczko
(2)
1
IPNO -
Institut de Physique Nucléaire d'Orsay
2 GANIL - Grand Accélérateur National d'Ions Lourds
3 LPCC - Laboratoire de physique corpusculaire de Caen
4 CNAM Paris - Centre d'enseignement Cnam Paris
5 IPNL - Institut de Physique Nucléaire de Lyon
6 EA S2HEP - Sciences et Société ; Historicité, Éducation et Pratiques
2 GANIL - Grand Accélérateur National d'Ions Lourds
3 LPCC - Laboratoire de physique corpusculaire de Caen
4 CNAM Paris - Centre d'enseignement Cnam Paris
5 IPNL - Institut de Physique Nucléaire de Lyon
6 EA S2HEP - Sciences et Société ; Historicité, Éducation et Pratiques
O. Lopez
- Function : Author
- PersonId : 737418
- IdHAL : olivier-lopez1966
- ORCID : 0000-0003-0818-4564
- IdRef : 233548580
Eric Bonnet
- Function : Author
- PersonId : 171676
- IdHAL : eric-bonnet
- ORCID : 0000-0003-2625-6971
R. Bougault
- Function : Author
- PersonId : 940570
- IdHAL : bougault-remi
- ORCID : 0000-0002-2866-7398
J.D. Frankland
- Function : Author
- PersonId : 737417
- IdHAL : john-frankland
- ORCID : 0000-0002-4907-5041
G. Lehaut
- Function : Author
- PersonId : 836555
- ORCID : 0000-0001-5137-9135
M. La Commara
- Function : Author
N. Le Neindre
- Function : Author
- PersonId : 749506
- IdHAL : nicolas-le-neindre
- ORCID : 0000-0001-5419-6764
P. Marini
- Function : Author
- PersonId : 748921
- IdHAL : paola-marini
- ORCID : 0000-0001-9537-8126
- IdRef : 258994266
M. Pârlog
- Function : Author
- PersonId : 828878
- ORCID : 0000-0002-7566-0244
P. Pawłowski
- Function : Author
E. Rosato
- Function : Author
R. Roy
- Function : Author
E. Spadaccini
- Function : Author
E. Vient
- Function : Author
- PersonId : 940571
- ORCID : 0000-0002-6891-7750
M. Vigilante
- Function : Author
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 5-80 MeV/nucleon. 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 52 MeV/nucleon and Xe+Sn at 32 MeV/nucleon. New possible variables and an improved modelization to investigate symmetry energy are discussed.