1. NECK FRAGMENTATION EVENT

2. NECK FRAGMENTATION EVENT

3. NECK FRAGMENTATION: CM Vz-Vx CORRELATIONS
124Sn + 64Ni
35 AMeV
(Asystiff)
b=7fm
NECK FRAGMENTATION: CM Vz-Vx CORRELATIONS
Large dispersion also along transversal, x, direction
b=5fm
TLF
IMF
b=8fm
PLF
b=6fm

4. DEVIATIONS FROM VIOLA SYSTEMATICS
r - ratio of the observed PLF-IMF relative velocity to the
corresponding Coulomb velocity;
r1- the same ratio for the pair TLF-IMF
The IMF is weakly correlated with both PLF and TLF
Wilczynski-2 plot !

5. DEVIATIONS FROM VIOLA SYSTEMATICS
Wilczynski-2 plot
LNS-Catania 2003

6. Most of IMF from neck fast break-up are localized at mid-velocity:
Semi-pheripheral
collisions
r – ratio PLF-IMF
r1 - ratio TLF-IMF
124Sn + 64Ni
(35 AMeV)
Most of IMF from neck fast break-up are localized at mid-velocity:
r tends to increase with impact parameter
DEVIATION FROM VIOLA SYSTEMATIC:
PROBABILITY DISTRIBUTION

7. ALIGNMENT CHARACTERISTICS
plane– the angle, projected into reaction plane, between the direction defined by the relative velocity of the CM of the system PLF-IMF to TLF and the direction defined by the relative velocity of PLF to IMF.
Alignment and large deviations from Viola systematics are closely related.
Asystiff, b=6,7,8 fm