NECK FRAGMENTATION EVENT

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Presentation transcript:

NECK FRAGMENTATION EVENT

NECK FRAGMENTATION EVENT

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

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 !

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

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

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