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Title: Constraining simultaneously nuclear symmetry energy and neutron-proton effective mass splitting with nucleus giant resonances using a dynamical approach

Authors:
; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1349142
Grant/Contract Number:
DEFG02- 13ER42025; de-sc0013702
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 95; Journal Issue: 3; Related Information: CHORUS Timestamp: 2017-03-30 11:32:33; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Kong, Hai-Yun, Xu, Jun, Chen, Lie-Wen, Li, Bao-An, and Ma, Yu-Gang. Constraining simultaneously nuclear symmetry energy and neutron-proton effective mass splitting with nucleus giant resonances using a dynamical approach. United States: N. p., 2017. Web. doi:10.1103/PhysRevC.95.034324.
Kong, Hai-Yun, Xu, Jun, Chen, Lie-Wen, Li, Bao-An, & Ma, Yu-Gang. Constraining simultaneously nuclear symmetry energy and neutron-proton effective mass splitting with nucleus giant resonances using a dynamical approach. United States. doi:10.1103/PhysRevC.95.034324.
Kong, Hai-Yun, Xu, Jun, Chen, Lie-Wen, Li, Bao-An, and Ma, Yu-Gang. Wed . "Constraining simultaneously nuclear symmetry energy and neutron-proton effective mass splitting with nucleus giant resonances using a dynamical approach". United States. doi:10.1103/PhysRevC.95.034324.
@article{osti_1349142,
title = {Constraining simultaneously nuclear symmetry energy and neutron-proton effective mass splitting with nucleus giant resonances using a dynamical approach},
author = {Kong, Hai-Yun and Xu, Jun and Chen, Lie-Wen and Li, Bao-An and Ma, Yu-Gang},
abstractNote = {},
doi = {10.1103/PhysRevC.95.034324},
journal = {Physical Review C},
number = 3,
volume = 95,
place = {United States},
year = {Wed Mar 29 00:00:00 EDT 2017},
month = {Wed Mar 29 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevC.95.034324

Citation Metrics:
Cited by: 1work
Citation information provided by
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  • Based on the Hugenholtz-Van Hove theorem, it is shown that both the symmetry energy E{sub sym}({rho}) and its density slope L({rho}) at normal density {rho}{sub 0} are completely determined by the nucleon global optical potentials. The latter can be extracted directly from nucleon-nucleus scatterings, (p,n) charge-exchange reactions, and single-particle energy levels of bound states. Averaging all phenomenological isovector nucleon potentials constrained by world data available in the literature since 1969, the best estimates of E{sub sym}({rho}{sub 0})=31.3 MeV and L({rho}{sub 0})=52.7 MeV are simultaneously obtained. Moreover, the corresponding neutron-proton effective mass splitting in neutron-rich matter of isospin asymmetry {delta} ismore » estimated to be (m{sub n}{sup *}-m{sub p}{sup *})/m=0.32{delta}.« less
  • Using a simple density-dependent finite-range effective interaction having Yukawa form, the density dependence of isoscalar and isovector effective masses is studied. The isovector effective mass is found to be different for different pairs of like and unlike nucleons. Using HVH theorem, the neutron-proton effective mass splitting is represented in terms of symmetry energy and its density slope. It is again observed that the neutron-proton effective mass splitting has got a positive value when isoscalar effective mass is greater than the isovector effective mass and has a negative value for the opposite case. Furthermore, the neutron-proton effective mass splitting is foundmore » to have a linear dependence on asymmetry β. The second-order symmetry potential has a vital role in the determination of density slope of symmetry energy but it does not have any contribution on neutron-proton effective mass splitting. The finite-range effective interaction is compared with the SLy2, SKM, f{sub −}, f{sub 0}, and f{sub +} forms of interactions.« less
  • The neutron–proton effective mass splitting in asymmetric nucleonic matter of isospin asymmetry δ and normal density is found to be m* n-p≡(m* n – m* p)/m = (0.41 ± 0.15)δ from analyzing globally 1088 sets of reaction and angular differential cross sections of proton elastic scattering on 130 targets with beam energies from 0.783 MeV to 200 MeV, and 1161 sets of data of neutron elastic scattering on 104 targets with beam energies from 0.05 MeV to 200 MeV within an isospin dependent non-relativistic optical potential model. It sets a useful reference for testing model predictions on the momentum dependencemore » of the nucleon isovector potential necessary for understanding novel structures and reactions of rare isotopes.« less
  • The neutron–proton effective mass splitting in asymmetric nucleonic matter of isospin asymmetry δ and normal density is found to be m* n-p≡(m* n – m* p)/m = (0.41 ± 0.15)δ from analyzing globally 1088 sets of reaction and angular differential cross sections of proton elastic scattering on 130 targets with beam energies from 0.783 MeV to 200 MeV, and 1161 sets of data of neutron elastic scattering on 104 targets with beam energies from 0.05 MeV to 200 MeV within an isospin dependent non-relativistic optical potential model. It sets a useful reference for testing model predictions on the momentum dependencemore » of the nucleon isovector potential necessary for understanding novel structures and reactions of rare isotopes.« less
  • Fusion and non-fusion contributions to the intermediate mass fragment yields in nucleus-nucleus collisions near the Fermi energy domain have been calculated in the framework of an integrated theoretical model where the dynamical evolution of the colliding system leads to the formation of either imcompletely fused composite or incomplete deep inelastic and-or quasielastic fragments, which subsequently undergo statistical binary decay to yield final fragments. Salient features of incomplete fusion and incomplete deep inelastic collision processes have been studied in detail. Predicted yields from the incomplete fusionlike and non-fusionlike processes agree well with the respective experimental data. Calculated total elemental yields ofmore » the primary fragments also compare well with the experimental data in the whole range of intermediate mass fragments emitted in the Fermi energy domain. It has been observed that the secondary deexcitation of the primary fragments does not affect the total elementary yield distribution in a significant way.« less