Nuclear Flow in Consistent Boltzmann Algorithm Models

Abstract

We investigate the stochastic Direct Simulation Monte Carlo method (DSMC) for numerically solving the collision-term in heavy-ion transport theories of the Boltzmann-Uehling-Uhlenbeck (BUU) type. The first major modification we consider is changes in the collision rates due to excluded volume and shadowing/screening effects (Enskog theory). The second effect studied by us is the inclusion of an additional advection term. These modifications ensure a non-vanishing second virial and change the equation of state for the scattering process from that of an ideal gas to that of a hard-sphere gas. We analyse the effect of these modifications on the calculated value of directed nuclear collective flow in heavy ion collisions, and find that the flow slightly increases.

arXiv comment12 pages, REVTeX, figures available in PostScript from the authors upon request

References in corpus (5)

• Nuclear Flow Excitation Function
• Effects of Compression and Collective Expansion on Particle Emission from Central Heavy-Ion Reactions
• Delays Associated with Elementary Processes in Nuclear Reaction Simulations
• Collective Flow from the Intranuclear Cascade Model
• Causality Violations in Cascade Models of Nuclear Collisions

Cited by in corpus (9)

• Kinetic equation consistent with the equation of state of nuclear matter
• Virial corrections to simulations of heavy ion reactions
• Direct Simulation Monte Carlo method for cold atom dynamics: classical Boltzmann equation in the quantum collision regime
• Duration and non-locality of a nucleon-nucleon collision
• Mid-rapidity charge distribution in peripheral heavy ion collisions
• Nonequilibrium thermodynamics with binary quantum correlations
• Hydrodynamic Shock Wave Studies within a Kinetic Monte Carlo Approach
• Nonlocal Kinetic Equation and Simulations of Heavy Ion Reactions
• Transport theory with nonlocal corrections