Freeze-out volume in multifragmentation - dynamical simulations

M. Pârlog (1, 2) , G. Tabacaru (2, 3) , J.P. Wieleczko (1) , J.D. Frankland (1) , B. Borderie (3) , A. Chbihi (1) , M. Colonna (4) , M.F. Rivet (3)

1 GANIL - Grand Accélérateur National d'Ions Lourds
2 NIPNE - National Institute for Physics and Nuclear Engineering
3 IPNO - Institut de Physique Nucléaire d'Orsay
4 LNS - Laboratori Nazionali del Sud

Stochastic mean-field simulations for multifragmenting sources at the same excitation energy per nucleon have been performed. The freeze-out volume, a concept which needs to be precisely defined in this dynamical approach, was shown to increase as a function of three parameters: freeze-out instant, fragment multiplicity and system size.

Mots clés: stochastic mean-field simulations; dynamical evolution of the freeze-out volume; multifragmenting sources; central collisions

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

M. Pârlog, G. Tabacaru, J.P. Wieleczko, J.D. Frankland, B. Borderie, et al.. Freeze-out volume in multifragmentation - dynamical simulations. European Physical Journal A, 2005, 25, pp.223-228. ⟨10.1140/epja/i2005-10106-3⟩. ⟨hal-00004379⟩