Dynamique et Thermodynamique nucléaire

Dynamique
nucléaire
Olivier LOPEZ
20 ans d'INDRA
1

 Dynamics of heavy ion collisions
 Thermodynamics of (hot) nuclear matter
Physics Motivations
- Reaction mechanisms and transport properties
-Deep Inelastic, neck emission, multifragmentation
-Isospin diffusion, nuclear stopping, particle flows
-In-medium properties : NN mean free path and cross section
- Link to the EOS
-Compressibility (radial/elliptic flows)
-Symmetry energy for asymetric NM
- Nuclear matter in proto-neutron stars
-bulk properties vs finite size effects (surface, coulomb, nuclei)
- Phase transitions for strongly correlated finite systems
-Phase diagram : Liquid-Gas phase transitions, first/second order
-Critical phenomena, universal fluctuations
-Temperature/Density/Isospin dependence
Les 20 ans d'INDRA, GANIL le 15 Octobre 2013 Olivier LOPEZ, Dynamique et Thermodynamique nucléaire

E = f( ρ , T , δ )
Physics playground : Equation of State
Nuclear matter :
Bulk properties
Extensive systems
(volume,size)
Symmetric NM
or pure neutron matter
(δ=0,1)
Phase Diagram structure and Phase Transitions
Astrophysical context (NS)
Les 20 ans d'INDRA, GANIL le 15 Octobre 2013 Olivier LOPEZ, Dynamique et Thermodynamique nucléaire

E = f( ρ , T , δ )
Nuclear matter :
Bulk properties
Extensive systems
(volume)
Nuclei :
Finite-size effects
Asymetric NM
(|δ|~0-0.5, Esym)
Non-extensive systems
(surface, Coulomb)
Phase Diagram structure and Phase Transitions
Physics playground : Equation of State
Symmetric NM
or pure neutron matter
(δ=0,1)
Terrestrian Labs
Astrophysical context (NS)
Conseil Scientifique LPC Caen, 11/07/13 Olivier LOPEZ, Dynamique et Thermodynamique
nucléaire

Phase diagram of Nuclear Matter
15 150 MeV
1 5-10
Density ρ/ρ0
Temperature
Gas
Liquid
QGP
Hadron gas
200 AGeV
Big Bang
Spinodal
region
10-100 AMeV
Liquid-Gas
coexistence
Connection to HE physics : QGP
1st order
PT
δ = (N-Z)/A
Introduction of the Isospin degree of Freedom
Critical points
15 1/3
(outer) Neutron Stars (inner)
Les 20 ans d'INDRA, GANIL le 15 Octobre 2013 Olivier LOPEZ, Dynamique et Thermodynamique nucléaire