From Stopping to Viscosity in Heavy Ion Collisions

Journal Article · Mon Apr 26 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3428908· OSTI ID:21367226

Barker, Brent W; Danielewicz, Pawel ^[1]

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1. National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States)

Stopping in heavy ion collisions is investigated with the aim of learning about the shear viscosity of nuclear matter. Boltzmann equation simulations are compared to available data on stopping in the energy range of 20-117 MeV/nucleon. Stopping observables used include momentum anisotropy and linear momentum transfer. The data show that modeling the transport with free nucleon-nucleon cross-sections is inaccurate and reduced cross-sections are required. Reduction of the cross-sections produces an increase in the shear viscosity of nuclear matter, compared to calculations based on free cross-sections.

• OSTI ID: 21367226
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1231; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANISOTROPY
BARYON-BARYON INTERACTIONS
BARYONS
BOLTZMANN EQUATION
COMPUTERIZED SIMULATION
CROSS SECTIONS
DIFFERENTIAL EQUATIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EQUATIONS
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
HEAVY ION REACTIONS
INTEGRO-DIFFERENTIAL EQUATIONS
INTERACTIONS
KINETIC EQUATIONS
LINEAR MOMENTUM TRANSFER
MATTER
MEV RANGE
MOMENTUM TRANSFER
NUCLEAR MATTER
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE INTERACTIONS
SHEAR
SIMULATION
VISCOSITY