Comparison of dynamical multifragmentation models

Abstract

Multifragmentation scenarios, as predicted by antisymmetrized molecular dynamics (AMD) or momentum-dependent stochastic mean-field (BGBD) calculations are compared. While in the BGBD case fragment emission is clearly linked to the spinodal decomposition mechanism, i.e. to mean-field instabilities, in AMD many-body correlations have a stronger impact on the fragmentation dynamics and clusters start to appear at earlier times. As a consequence, fragments are formed on shorter time scales in AMD, on about equal footing of light particle pre-equilibrium emission. Conversely, in BGBD pre-equilibrium and fragment emissions happen on different time scales and are related to different mechanisms.

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Cited by in corpus (18)

• Systematics of central heavy ion collisions in the 1A GeV regime
• Understanding transport simulations of heavy-ion collisions at 100 and 400 AMeV: Comparison of heavy ion transport codes under controlled conditions
• Dynamics of clusters and fragments in heavy-ion collisions
• Transport approaches for the Description of Intermediate-Energy Heavy-Ion Collisions
• Liquid-Gas phase transition in nuclei
• Medium mass fragments production due to momentum dependent interactions
• Effective interaction dependence of the liquid-gas phase transition in symmetric nuclear matter
• A new approach to solve the Boltzmann-Langevin equation for fermionic systems
• Fragmentation paths in dynamical models
• Phase transition dynamics for hot nuclei
• Theoretical predictions of experimental observables sensitive to the symmetry energy: Results of the SMF transport model
• Heavy-ion Collisions: Direct and indirect probes of the density and temperature dependence of Esym
• Constrained caloric curves and phase transition for hot nuclei
• One-body Langevin dynamics in heavy-ion collisions at intermediate energies
• Pre-equilibrium effects in charge-asymmetric low-energy reactions
• Exotic break-up modes in heavy ion reactions at low energies
• New scalings in nuclear fragmentation
• The behaviour of constrained caloric curves as ultimate signature of a phase transition for hot nuclei