NECK FRAGMENTATION EVENT
7
N E C K F R A G M E N T A T I O N E V E N T
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NECK FRAGMENTATION EVENT. NECK FRAGMENTATION EVENT. 124 Sn + 64 Ni 35 AMeV. (Asystiff). Large dispersion also along transversal, x, direction. NECK FRAGMENTATION: CM V z -V x CORRELATIONS. b=7fm. b=5fm. TLF. IMF. b=8fm. b=6fm. PLF. DEVIATIONS FROM VIOLA SYSTEMATICS. - PowerPoint PPT Presentation
Transcript of NECK FRAGMENTATION EVENT
NE
CK
FR
AG
ME
NT
AT
ION
EV
EN
T
NE
CK
FR
AG
ME
NT
AT
ION
EV
EN
T
NE
CK
FR
AG
ME
NT
AT
ION
: CM
Vz -V
x CO
RR
EL
AT
ION
SPLF
IMF
TL
F
Large dispersion also along transversal, x, direction
124Sn +
64Ni
35 AM
eV
b=8fm
b=6fm
b=5fm
b=7fm
(Asy stiff)
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
DE
VIA
TIO
N F
RO
M V
IOL
A S
YS
TE
MA
TIC
: P
RO
BA
BIL
ITY
DIS
TR
IBU
TIO
N
Most of IM
F from
neck
fast break
-up
are localized at m
id-velocity:
r ten
ds to in
crease with
imp
act param
eter
124Sn
+ 64N
i (35 A
MeV
)
Sem
i-pheripheral collisions
r – ratio PL
F-IM
F
r1
- ratio TL
F-IM
F
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
