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

Abstract

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.

Authors:
 [1]; ;  [1]
  1. National Superconducting Cyclotron Laboratory and Department of Physics, Michigan State University, East Lansing, Michigan 48824 (United States)
Publication Date:
OSTI Identifier:
20698677
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 71; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevC.71.054603; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CROSS SECTIONS; ISOSPIN; NEUTRONS; NUCLEAR MATTER; NUCLEON-NUCLEON INTERACTIONS; PARTICLE RAPIDITY; PROTONS; STOPPING POWER; SYMMETRY; TRANSPORT THEORY

Citation Formats

Baoan, Li, Department of Chemistry and Physics, Post Office Box 419, Arkansas State University, State University, Arkansas 72467-0419, Danielewicz, Pawel, and Lynch, William G. Probing the isospin dependence of the in-medium nucleon-nucleon cross sections with radioactive beams. United States: N. p., 2005. Web. doi:10.1103/PhysRevC.71.054603.
Baoan, Li, Department of Chemistry and Physics, Post Office Box 419, Arkansas State University, State University, Arkansas 72467-0419, Danielewicz, Pawel, & Lynch, William G. Probing the isospin dependence of the in-medium nucleon-nucleon cross sections with radioactive beams. United States. https://doi.org/10.1103/PhysRevC.71.054603
Baoan, Li, Department of Chemistry and Physics, Post Office Box 419, Arkansas State University, State University, Arkansas 72467-0419, Danielewicz, Pawel, and Lynch, William G. 2005. "Probing the isospin dependence of the in-medium nucleon-nucleon cross sections with radioactive beams". United States. https://doi.org/10.1103/PhysRevC.71.054603.
@article{osti_20698677,
title = {Probing the isospin dependence of the in-medium nucleon-nucleon cross sections with radioactive beams},
author = {Baoan, Li and Department of Chemistry and Physics, Post Office Box 419, Arkansas State University, State University, Arkansas 72467-0419 and Danielewicz, Pawel and Lynch, William G},
abstractNote = {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.},
doi = {10.1103/PhysRevC.71.054603},
url = {https://www.osti.gov/biblio/20698677}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 5,
volume = 71,
place = {United States},
year = {2005},
month = {5}
}