Transport model study of nuclear stopping in heavy-ion collisions over the energy range from 0.09A to 160A GeV
- Institute of Theoretical Physics, Shanxi University, Taiyuan, Shanxi 030006 (China)
- School of Science, Huzhou Teachers College, Huzhou, Zhejiang 313000 (China)
- China Institute of Atomic Energy, Post Office Box 275 (18), Beijing 102413 (China)
Nuclear stopping in heavy-ion collisions over a beam energy range from SIS and AGS up to SPS is studied in the framework of the modified Ultrarelativistic Quantum Molecular Dynamics transport model, in which mean field potentials of both formed and 'preformed' hadrons (from string fragmentation) and medium-modified nucleon-nucleon elastic cross sections are considered. It is found that nuclear stopping is influenced by both the stiffness of the equation of state and medium modifications of nucleon-nucleon cross sections at SIS energies. At high SPS energies, a two-bump structure is shown in the experimental rapidity distribution of free protons, which can be understood by considering the preformed hadron potentials.
- OSTI ID:
- 21386706
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevC.81.034913; (c) 2010 The American Physical Society; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BEAMS
CROSS SECTIONS
DISTRIBUTION
ENERGY LOSSES
EQUATIONS OF STATE
FLEXIBILITY
FRAGMENTATION
GEV RANGE
HEAVY ION REACTIONS
MEAN-FIELD THEORY
MODIFICATIONS
MOLECULAR DYNAMICS METHOD
PARTICLE RAPIDITY
PROTONS
RELATIVISTIC RANGE
TRANSPORT THEORY
BARYONS
CALCULATION METHODS
ELEMENTARY PARTICLES
ENERGY RANGE
EQUATIONS
FERMIONS
HADRONS
LOSSES
MECHANICAL PROPERTIES
NUCLEAR REACTIONS
NUCLEONS
PARTICLE PROPERTIES
TENSILE PROPERTIES