HAL - IN2P3 :: [in2p3-00384563, version 1] Dynamical Signals in Fragmentation Reactions: Time Scale Determination from Three Fragments Correlations by Using the 4$\pi$ CHIMERA Multidetector

HAL: in2p3-00384563, version 1

The IV Workshop on Particle Correlations and Femtoscopy, Krakow : Pologne (2008)

Dynamical Signals in Fragmentation Reactions: Time Scale Determination from Three Fragments Correlations by Using the 4$\pi$ CHIMERA Multidetector

E. De Filippo, F. Amorini, A. Anzalone, L. Auditore, V. Baran, I. Berceanu, J. Blicharska, B. Borderie¹, R. Bougault², M. Bruno, J. Brzychczyk, G. Cardella, S. Cavallaro, M.B. Chatterjee, A. Chbihi³, M. Colonna, M. D'Agostino, R. Dayras⁴, M. Di Toro, U. Emanuele, J. Frankland³, E. Galichet¹, W. Gawlikowicz, E. Geraci, F. Giustolisi, L. Grassi, A. Grzeszczuk, P. Guazzoni, D. Guinet⁵, S. Kowalski, E. La Guidara, G. Lanzalone, G. Lanzanň, N. Le Neindre², I. Lombardo, C. Maiolino, Z. Majka, A. Pagano, M. Papa, M. Petrovici, E. Piasecki, S. Pirrone, R. Płaneta, G. Politi, A. Pop, F. Porto, M.F. Rivet¹, E. Rosato, F. Rizzo, P. Russotto, K. Schmidt, K. Siwek-Wilczyńska, I. Skwira, A. Sochocka, A. Trifirň, M. Trimarchi, G. Verde, M. Vigilante, J.P. Wieleczko³, J. Wilczyński, L. Zetta, W. Zipper

For the CHIMERA collaboration(s)

(2009)

For fragments emitted in the reactions 124Sn + 64Ni and 112Sn + 58Ni at 35 AMeV, isotopic composition and velocity correlations have been studied as a function of the centrality of the collision, using the 4\pi Chimera multidetector. We have investigated the time scale for fragments formation, in order to distinguish between prompt dynamical and sequential statistical emission. Promptly emitted light fragments (Z \leq 9) produced in the mid-rapidity domain are characterised by larger N/Z ratio and stronger angular anisotropies than those produced in sequential statistical emission. Results are compared with stochastic BNV code simulations obtained for primary fragments. Valuable information on the symmetry term of the nuclear equation of state at sub-saturation densities are obtained.

1:	IPNO - Institut de Physique Nucléaire d'Orsay

2:	LPCC - Laboratoire de Physique Corpusculaire de Caen

3:	GANIL - Grand Accélérateur National d'Ions Lourds

4:	IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers (ex DAPNIA)

5:	IPNL - Institut de Physique Nucléaire de Lyon

Subject(s)

Physics/Nuclear Experiment


in2p3-00384563, version 1
http://hal.in2p3.fr/in2p3-00384563
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From: Michel Lion <>
Submitted on: Friday, 15 May 2009 14:35:20
Updated on: Wednesday, 20 May 2009 12:50:37