Probing the isospin dependence of the in-medium nucleon-nucleon cross sections with radioactive beams

Journal Article · Sun May 01 04:00:00 EDT 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.71.054603· OSTI ID:20698677

Baoan, Li ^[1]; Danielewicz, Pawel; Lynch, William G ^[1]

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

Within a transport model we search for potential probes of the isospin dependence of the in-medium nucleon-nucleon (NN ) cross sections. Traditional measures of the nuclear stopping power are found to be sensitive to the magnitude but they are ambiguous for determining the isospin dependence of the in-medium NN cross sections. It is shown that isospin tracers, such as the neutron/proton ratio of free nucleons, at backward rapidities and angles in nuclear reactions induced by radioactive beams in inverse kinematics are a sensitive probe of the isospin dependence of the in-medium NN cross sections. At forward rapidities and angles, in contrast, they are more sensitive to the density dependence of the symmetry energy. Measurements of the rapidity and angular dependence of the isospin transport in nuclear reactions will enable a better understanding of the isospin dependence of in-medium nuclear effective interactions.

• OSTI ID: 20698677
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 71; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CROSS SECTIONS
ISOSPIN
NEUTRONS
NUCLEAR MATTER
NUCLEON-NUCLEON INTERACTIONS
PARTICLE RAPIDITY
PROTONS
STOPPING POWER
SYMMETRY
TRANSPORT THEORY