skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Reexamining the isospin-relaxation time in intermediate-energy heavy-ion collisions

Abstract

Isospin-relaxation times characterizing isospin transport processes between the projectile and the target with different N/Z ratios and that between the neck and the spectator with different isospin asymmetries and densities in intermediate-energy heavy-ion collisions are studied within an isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model using the lattice Hamiltonian approach. The respective roles and timescales of the isospin diffusion and drift as the major mechanisms of isospin transport in intermediate-energy heavy-ion collisions are discussed. Finally, effects of nuclear symmetry energy and neutron-proton effective mass splitting on the isospin relaxation times are examined.

Authors:
 [1];  [2];  [3];  [4]
  1. Chinese Academy of Sciences (CAS), Shanghai (China); Chinese Academy of Sciences (CAS), Beijing (China); ShanghaiTech Univ. (China)
  2. Chinese Academy of Sciences (CAS), Shanghai (China)
  3. Texas A & M Univ., Commerce, TX (United States)
  4. Chinese Academy of Sciences (CAS), Shanghai (China); ShanghaiTech Univ. (China)
Publication Date:
Research Org.:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); Major State Basic Research Development Program of China; National Natural Science Foundation of China (NNSFC); Shanghai Key Laboratory of Particle Physics and Cosmology
OSTI Identifier:
1658227
Alternate Identifier(s):
OSTI ID: 1482423
Grant/Contract Number:  
SC0013702; FG02-13ER42025; 2015CB856904; 11475243; 11320101004; 11421505; 15DZ2272100; SC0009971
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 98; Journal Issue: 5; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; low & intermediate energy heavy-ion reactions; symmetry energy; Monte Carlo methods

Citation Formats

Wang, Han-Sheng, Xu, Jun, Li, Bao-An, and Shen, Wen-Qing. Reexamining the isospin-relaxation time in intermediate-energy heavy-ion collisions. United States: N. p., 2018. Web. doi:10.1103/physrevc.98.054608.
Wang, Han-Sheng, Xu, Jun, Li, Bao-An, & Shen, Wen-Qing. Reexamining the isospin-relaxation time in intermediate-energy heavy-ion collisions. United States. https://doi.org/10.1103/physrevc.98.054608
Wang, Han-Sheng, Xu, Jun, Li, Bao-An, and Shen, Wen-Qing. Fri . "Reexamining the isospin-relaxation time in intermediate-energy heavy-ion collisions". United States. https://doi.org/10.1103/physrevc.98.054608. https://www.osti.gov/servlets/purl/1658227.
@article{osti_1658227,
title = {Reexamining the isospin-relaxation time in intermediate-energy heavy-ion collisions},
author = {Wang, Han-Sheng and Xu, Jun and Li, Bao-An and Shen, Wen-Qing},
abstractNote = {Isospin-relaxation times characterizing isospin transport processes between the projectile and the target with different N/Z ratios and that between the neck and the spectator with different isospin asymmetries and densities in intermediate-energy heavy-ion collisions are studied within an isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model using the lattice Hamiltonian approach. The respective roles and timescales of the isospin diffusion and drift as the major mechanisms of isospin transport in intermediate-energy heavy-ion collisions are discussed. Finally, effects of nuclear symmetry energy and neutron-proton effective mass splitting on the isospin relaxation times are examined.},
doi = {10.1103/physrevc.98.054608},
url = {https://www.osti.gov/biblio/1658227}, journal = {Physical Review C},
issn = {2469-9985},
number = 5,
volume = 98,
place = {United States},
year = {2018},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Isospin asymmetry in nuclei and neutron stars
journal, June 2005


Isospin relaxation time in heavy-ion collisions at intermediate energies
journal, April 1998


Isospin nonequilibrium in heavy-ion collisions at intermediate energies
journal, October 1995


Probing effective nucleon masses with heavy-ion collisions
journal, July 2016


Nucleon effective masses in neutron-rich matter
journal, March 2018


Many-body theory of nuclear matter
journal, May 1976


Equations of state for supernovae and compact stars
journal, March 2017


A guide to microscopic models for intermediate energy heavy ion collisions
journal, March 1988


Heavy-ion collisions: Direct and indirect probes of the density and temperature dependence of Esym
journal, February 2014


Neutron–proton effective mass splitting and thermal evolution in neutron-rich matter
journal, September 2011


Isospin Diffusion and the Nuclear Symmetry Energy in Heavy Ion Reactions
journal, February 2004


Reaction dynamics with exotic nuclei
journal, May 2005


Recent progress and new challenges in isospin physics with heavy-ion reactions
journal, August 2008


Isospin emission and flow at high baryon density: A test of the symmetry potential
journal, April 2010


Isospin dynamics in peripheral heavy ion collisions at Fermi energies
journal, June 2008


Density matrix expansion for the isospin- and momentum-dependent MDI interaction
journal, October 2010


Constraints on nucleon effective mass splitting with heavy ion collisions
journal, May 2014


Nuclear mean field dynamics in the lattice Hamiltonian Vlasov method
journal, June 1989


Asymmetry effects on nuclear fragmentation
journal, January 2001


The nuclear symmetry energy
journal, November 2016


Nuclear Symmetry Energy Extracted from Laboratory Experiments
journal, October 2017


The equation of state and symmetry energy of low-density nuclear matter
journal, February 2014


Fast nucleon emission as a probe of the momentum dependence of the symmetry potential
journal, December 2005


Isospin fractionation in the nucleon emissions and fragment emissions in the intermediate energy heavy ion collisions
journal, October 2003


Constraints on the Density Dependence of the Symmetry Energy
journal, March 2009


Isospin dependence of nuclear multifragmentation in 112 Sn + 112 Sn and 124 Sn + 124 Sn collisions at 40 MeV/nucleon
journal, November 1999


Characterizing Neutron-Proton Equilibration in Nuclear Reactions with Subzeptosecond Resolution
journal, February 2017


Theoretical predictions of experimental observables sensitive to the symmetry energy: Results of the SMF transport model
journal, February 2014


Symmetry energy dependence of long-timescale isospin transport
journal, December 2014


Topical issue on nuclear symmetry energy
journal, February 2014


Transport parameters in neutron stars from in-medium NN cross sections
journal, July 2010


Elliptic flow and the Symmetry Energy at Supra-Saturation Density
journal, June 2012


Nuclear isospin diffusivity
journal, December 2003


On the Landau effective mass in asymmetric nuclear matter
journal, July 1976


Isospin transport at Fermi energies
journal, December 2005


Isospin splitting of the nucleon effective mass from giant resonances in Pb 208
journal, March 2016


Isospin Physics in Heavy-Ion Collisions at Intermediate Energies
journal, April 1998


A way forward in the study of the symmetry energy: experiment, theory, and observation
journal, July 2014


Effective masses in relativistic approaches to the nucleon-nucleus mean field
journal, July 1989


Determination of the Stiffness of the Nuclear Symmetry Energy from Isospin Diffusion
journal, January 2005


Timescale for isospin equilibration in projectile breakup
journal, February 2014


Reexamination of the neutron-to-proton-ratio puzzle in intermediate-energy heavy-ion collisions
journal, April 2015


    Works referencing / citing this record:

    Nuclear matter properties at finite temperatures from effective interactions
    journal, August 2019