A "Little Big Bang" Scenario of Multifragmentation

Abstract

We suggest a multifragmentation scenario in which fragments are produced at an early, high temperature and high density, stage of the reaction. In this scenario, self-bound clusters of particles in the hot and dense fluid are the precursors of the observed fragments. This solves a number of recurrent problems concerning the kinetic energies and the temperature of the fragments, encountered with the standard low density fragmentation picture. The possibility to recover the initial thermodynamic parameters from the inspection of the asymptotic fragment size and kinetic energy distributions is discussed.

15 pages, 12 figures

References in corpus (5)

• Temperatures of Exploding Nuclei
• Clusters in Simple Fluids
• Percolation line of stable clusters in supercritical fluids
• Non equilibrium effects in fragmentation
• Multifragmentation - what the data tell us about the different models

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• Thermal and Chemical Freeze-out in Spectator Fragmentation
• Statistical Multifragmentation of Non-Spherical Expanding Sources in Central Heavy-Ion Collisions
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• Comparison of dynamical multifragmentation models
• Isospin dependent thermodynamics of fragmentation
• Short timescale behavior of colliding heavy nuclei at intermediate energies
• Looking for bimodal distributions in multi-fragmentation reactions
• Bimodality - a general feature of heavy ion reactions
• Multifragmentation and the liquid-gas phase transition: an experimental overview
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• The role of Coulomb interaction in fragmentation
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• The percolation phase transition and statistical multifragmentation in finite systems
• Memory effects on the statistics of fragmentation
• Dynamics and thermodynamics of fragment emission from excited sources
• Common Approaches in Description of Ordinary Liquids and Hadronic Matter
• Expansion dynamics of Lennard-Jones systems