Fragmentation paths in dynamical models
- Laboratori Nazionali del Sud-Istituto Nazionale Fisica Nucleare, I-95123 Catania (Italy)
- Department of Physics, Tohoku University, Sendai 980-8578 (Japan)
We undertake a quantitative comparison of multifragmentation reactions, as modeled by two different approaches: the antisymmetrized molecular dynamics (AMD) and the momentum-dependent stochastic mean-field (SMF) model. Fragment observables and pre-equilibrium (nucleon and light cluster) emission are analyzed, in connection with the underlying compression-expansion dynamics in each model. Considering reactions between neutron-rich systems, observables related to the isotopic properties of emitted particles and fragments are also discussed, as a function of the parametrization employed for the isovector part of the nuclear interaction. We find that the reaction path, particularly the mechanism of fragmentation, is different in the two models and reflects on some properties of the reaction products, including their isospin content. This should be taken into account in the study of the density dependence of the symmetry energy from such collisions.
- OSTI ID:
- 21499190
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 82, Issue 5; Other Information: DOI: 10.1103/PhysRevC.82.054613; (c) 2010 The American Physical Society; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COLLISIONS
COMPARATIVE EVALUATIONS
COMPRESSION
DENSITY
EMISSION
EQUILIBRIUM
EXPANSION
INTERACTIONS
ISOSPIN
ISOVECTORS
MEAN-FIELD THEORY
MOLECULAR DYNAMICS METHOD
NEUTRONS
NUCLEAR FRAGMENTATION
PARTICLES
SIMULATION
STOCHASTIC PROCESSES
SYMMETRY
BARYONS
CALCULATION METHODS
ELEMENTARY PARTICLES
EVALUATION
FERMIONS
HADRONS
NUCLEAR REACTIONS
NUCLEONS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
TENSORS
VECTORS