Observation of fast collinear partitioning of the 197Au + 197Au system into three and four fragments of comparable size

Amorini, F.; Anzalone, A.; Auditore, L.; Baran, V.; Brzychczyk, J.; Cardella, G.; Cavallaro, S.; Chatterjee, M. B.; Colonna, M.; De Filippo, E.; Di Toro, M.; Gawlikowicz, W.; Geraci, E.; Grzeszczuk, A.; Guazzoni, P.; Kowalski, S.; La Guidara, E.; Lanzalone, Gaetano; Łukasik, J.; Maiolino, C.; Majka, Z.; Nicolis, N. G.; Pagano, A.; Papa, M.; Piasecki, E.; Pirrone, S.; Płaneta, R.; Politi, G.; Porto, F.; Rizzo, F.; Russotto, P.; Schmidt, K.; Skwira Chalot, I.; Siwek Wilczy´nska, K.; Sochocka, A.; ´ Swiderski, Ł.; Trifirò, A.; Trimarchi, M.; Wieleczko, J. P.; Wilczy´nski, J.; Zetta, L.; Zipper, W.

doi:10.1103/PhysRevC.81.024605

Collisions of a very heavy nonfusing nuclear system Au-197 + Au-197 were studied at an energy of 15 MeV/nucleon. An interesting process of violent reseparation of this heavy system into three or four fragments of comparable size was observed. In the case of ternary partitioning, either the projectile-like fragment (PLF) or target-like fragment (TLF) breaks up almost collinearly with the PLF-TLF separation axis. In the case of quaternary reactions, both PLF and TLF were observed breaking up along this direction. By comparison with a dynamical model of deep inelastic collisions it was concluded that the ternary and quaternary reactions occur in semiperipheral collisions, in a range of angular momenta corresponding to about 0.5-0.7 of the maximum L value for grazing collisions. The time elapsing from the scission of the binary PLF + TLF system to the secondary scission of PLF or TLF was estimated to be of about 70-80 fm/c for the ternary reactions and 80-100 fm/c for the quaternary reactions.

Titolo:	Observation of fast collinear partitioning of the 197Au + 197Au system into three and four fragments of comparable size
Autori:	F. Amorini A. Anzalone L. Auditore V. Baran J. Brzychczyk G. Cardella S. Cavallaro M. B. Chatterjee M. Colonna E. De Filippo M. Di Toro W. Gawlikowicz E. Geraci A. Grzeszczuk P. Guazzoni S. Kowalski E. La Guidara LANZALONE, GAETANO [Membro del Collaboration Group] (Corresponding) J. Łukasik C. Maiolino Z. Majka N. G. Nicolis A. Pagano M. Papa E. Piasecki S. Pirrone R. Płaneta G. Politi F. Porto F. Rizzo P. Russotto K. Schmidt I. Skwira Chalot K. Siwek Wilczy´nska A. Sochocka Ł. ´ Swiderski A. Trifirò M. Trimarchi J. P. Wieleczko J. Wilczy´nski L. Zetta W. Zipper mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2010
Rivista:	PHYSICAL REVIEW. C, NUCLEAR PHYSICS
Handle:	http://hdl.handle.net/11387/6980
Appare nelle tipologie:	1.1 Articolo in rivista

File in questo prodotto:

Non ci sono file associati a questo prodotto.

Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/11387/6980

Citazioni

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

CINECA IRIS Institutional Research Information System

File in questo prodotto: