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Title: Initialization effect in heavy-ion collisions at intermediate energies

Abstract

Based on the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model plus the Skyrme force parameters, the initialization effect is studied in heavy-ion collisions at intermediate energies. We find that there are moderate initialization effects in the following observables: free neutron to proton ratio (n/p), {pi}{sup -}/{pi}{sup +} ratio, and neutron to proton differential flow (F{sub n-p}{sup x}). Effects of initialization are larger for charged {pi}{sup -}/{pi}{sup +} ratios than for n/p ratios. And the effects of initialization are more evident in nuclear reactions at lower incident beam energies. We do not see large effects of initialization for light reaction systems or large asymmetric (neutron-richer) reaction systems. We also see relatively large effects of initialization on the neutron to proton differential flow at relatively lower incident beam energies or with large impact parameters. These results may be useful for the delicate studies of the equation of state of asymmetric nuclear matter.

Authors:
; ;  [1];  [2]
  1. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)
  2. School of Information Engineering, Hangzhou Dianzi University, Hangzhou 310018 (China)
Publication Date:
OSTI Identifier:
21596760
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.84.034609; (c) 2011 American Institute of Physics; 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; ASYMMETRY; EQUATIONS OF STATE; HEAVY ION REACTIONS; IMPACT PARAMETER; ISOSPIN; NEUTRONS; NUCLEAR MATTER; PIONS MINUS; PIONS PLUS; PROTONS; SKYRME POTENTIAL; TRANSPORT THEORY; BARYONS; BOSONS; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; HADRONS; MATTER; MESONS; NUCLEAR REACTIONS; NUCLEON-NUCLEON POTENTIAL; NUCLEONS; PARTICLE PROPERTIES; PIONS; POTENTIALS; PSEUDOSCALAR MESONS

Citation Formats

Yong Gaochan, Zuo Wei, Zhang Xunchao, and Gao Yuan. Initialization effect in heavy-ion collisions at intermediate energies. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.034609.
Yong Gaochan, Zuo Wei, Zhang Xunchao, & Gao Yuan. Initialization effect in heavy-ion collisions at intermediate energies. United States. doi:10.1103/PHYSREVC.84.034609.
Yong Gaochan, Zuo Wei, Zhang Xunchao, and Gao Yuan. Thu . "Initialization effect in heavy-ion collisions at intermediate energies". United States. doi:10.1103/PHYSREVC.84.034609.
@article{osti_21596760,
title = {Initialization effect in heavy-ion collisions at intermediate energies},
author = {Yong Gaochan and Zuo Wei and Zhang Xunchao and Gao Yuan},
abstractNote = {Based on the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model plus the Skyrme force parameters, the initialization effect is studied in heavy-ion collisions at intermediate energies. We find that there are moderate initialization effects in the following observables: free neutron to proton ratio (n/p), {pi}{sup -}/{pi}{sup +} ratio, and neutron to proton differential flow (F{sub n-p}{sup x}). Effects of initialization are larger for charged {pi}{sup -}/{pi}{sup +} ratios than for n/p ratios. And the effects of initialization are more evident in nuclear reactions at lower incident beam energies. We do not see large effects of initialization for light reaction systems or large asymmetric (neutron-richer) reaction systems. We also see relatively large effects of initialization on the neutron to proton differential flow at relatively lower incident beam energies or with large impact parameters. These results may be useful for the delicate studies of the equation of state of asymmetric nuclear matter.},
doi = {10.1103/PHYSREVC.84.034609},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}