1. 124Sn + 64Ni
(35AMeV)
b- impact
parameter
plane PROBABILITY DISTRIBUTION
Transversal velocity (vx) reduction with increasing b

2. Preliminary Filtered F Th. (No Filter included) exp theo E =2700-3100
-180
-150
-120
-90
-60
-30 30 60 90
120
150
180
1.0
1.1
1.2
1.3
1.4
1.5
exp
theo
AH/AL= E 2F =
124
Sn + 64
Ni 35 MeV/nucl.
<V_R> F
plane
Preliminary
Th. (No Filter included)

3. E.Piasecki et al. IWM(2001) November 28, Catania(I) (preliminary)

4. asystiff asysoft 124Sn+64Ni 35AMeV
r DEPENDENCE OF IMF ISOSPIN COMPOSITION: EOS INFLUENCE
asysoft
64Ni
124Sn

5. ISOSCALING and SYMMETRY ENERGY
Isoscaling result: lnR21=Ct+N+Z 
Interpretation: ;
Consequences:
1.)
for
2.)
for
3.)
always
Derivation of ?
Yes, if
measured
From Mirror Isobar Yield Ratios!
Observations: - too large N/Z for both n-rich and n-poor systems
- too small value for
Problems:
Evaporation corrections, Equilibrium scenario
Heavier IMF’s – liquid phase ?

6. NECK ISOSCALING lnR21 N  = 0.95 asystiff asysoft  = 0.69 at 35 MeV/n
Z=1
Z=2
Z=6
Z=3
Z=7
Z=4
Z=5
lnR21
Z=9
Z=8 N
 = 0.95
asystiff
asysoft
at 35 MeV/n
(b=6,7,8fm)
 = 0.69

7. NECK ISOSCALING ln R21 Z asystiff  = -1.07 asysoft  = -0.68
at 35 MeV/n
(b=6,7,8fm)
 = -0.68
asysoft
“GRAND CANONICAL” NECK?

8. not very sensitive to Esym ?
Dynamical Isoscaling
primary
50 AMeV
(central coll.)
Z=1
Z=7
final
not very sensitive to Esym ?
124Sn Carbon isotopes (primary)
M.J. van Goethem,
G. Verde,M. Colonna
MSU data ( )
nucl-ex/
Asy-stiff
Asy-soft A

9. ISOSPIN IN REACTIONS: EOS – SENSITIVE OBSERVABLES
Competition of dissipative reaction mechanisms
N/Z of fast particle emission
(n,p) correlation functions
Isospin fractionation (isoscaling) *
Fragment multiplicities *
Isospin content of neck fragments *
Fast fission multiplicities
Isospin diffusion (charge equilibration)
n – p collective flows light isobar flows *
-/+ yields *
Deconfinement precursors
n-radii, n-star cooling, hybrid stars
* Asy-stiff indications but low asymmetries so far