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.
Cite
@article{arxiv.nucl-th/9512005,
title = {Nuclear Flow in Consistent Boltzmann Algorithm Models},
author = {G. Kortemeyer and F. Daffin and W. Bauer},
journal= {arXiv preprint arXiv:nucl-th/9512005},
year = {2009}
}
Comments
12 pages, REVTeX, figures available in PostScript from the authors upon request