Comparison of multifragmentation dynamical models

Journal Article · Wed Aug 15 04:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.024611· OSTI ID:21061971

Rizzo, J; Colonna, M ^[1]; Ono, A ^[2]

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1. LNS-INFN, I-95123 Catania (Italy)
2. Department of Physics, Tohoku University, Sendai 980-8578 (Japan)

Multifragmentation scenarios, as predicted by antisymmetrized molecular dynamics (AMD) or momentum-dependent stochastic mean-field (BGBD) calculations are compared. Whereas 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. In fact, the density and momentum fluctuations develop earlier in AMD, suggesting that fragments are formed on shorter time scales in AMD, on about equal footing as light-particle pre-equilibrium emission.

• OSTI ID: 21061971
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 76; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPARATIVE EVALUATIONS
CORRELATIONS
DENSITY
EMISSION
FLUCTUATIONS
MANY-BODY PROBLEM
MEAN-FIELD THEORY
MOLECULAR DYNAMICS METHOD
NUCLEAR FRAGMENTATION
NUCLEAR FRAGMENTS
STOCHASTIC PROCESSES