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Title: Systematic comparison of barriers for heavy-ion fusion calculated on the basis of the double-folding model by employing two versions of nucleon–nucleon interaction

Abstract

A systematic calculation of barriers for heavy-ion fusion was performed on the basis of the double-folding model by employing two versions of an effective nucleon–nucleon interaction: M3Y interaction and Migdal interaction. The results of calculations by the Hartree–Fockmethod with the SKX coefficients were taken for nuclear densities. The calculations reveal that the fusion barrier is higher in the case of employing theMigdal interaction than in the case of employing the Ðœ3Y interaction. In view of this, the use of the Migdal interaction in describing heavy-ion fusion is questionable.

Authors:
 [1];  [2]
  1. Omsk State Transport University (Russian Federation)
  2. Omsk State Technical University (Russian Federation)
Publication Date:
OSTI Identifier:
22612642
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Atomic Nuclei; Journal Volume: 79; Journal Issue: 4; Other Information: Copyright (c) 2016 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; FOLDING MODEL; HARTREE-FOCK METHOD; HEAVY ION FUSION REACTIONS; NUCLEAR MATTER; NUCLEON-NUCLEON INTERACTIONS

Citation Formats

Gontchar, I. I., and Chushnyakova, M. V., E-mail: maria.chushnyakova@gmail.com. Systematic comparison of barriers for heavy-ion fusion calculated on the basis of the double-folding model by employing two versions of nucleon–nucleon interaction. United States: N. p., 2016. Web. doi:10.1134/S1063778816040104.
Gontchar, I. I., & Chushnyakova, M. V., E-mail: maria.chushnyakova@gmail.com. Systematic comparison of barriers for heavy-ion fusion calculated on the basis of the double-folding model by employing two versions of nucleon–nucleon interaction. United States. doi:10.1134/S1063778816040104.
Gontchar, I. I., and Chushnyakova, M. V., E-mail: maria.chushnyakova@gmail.com. 2016. "Systematic comparison of barriers for heavy-ion fusion calculated on the basis of the double-folding model by employing two versions of nucleon–nucleon interaction". United States. doi:10.1134/S1063778816040104.
@article{osti_22612642,
title = {Systematic comparison of barriers for heavy-ion fusion calculated on the basis of the double-folding model by employing two versions of nucleon–nucleon interaction},
author = {Gontchar, I. I. and Chushnyakova, M. V., E-mail: maria.chushnyakova@gmail.com},
abstractNote = {A systematic calculation of barriers for heavy-ion fusion was performed on the basis of the double-folding model by employing two versions of an effective nucleon–nucleon interaction: M3Y interaction and Migdal interaction. The results of calculations by the Hartree–Fockmethod with the SKX coefficients were taken for nuclear densities. The calculations reveal that the fusion barrier is higher in the case of employing theMigdal interaction than in the case of employing the Ðœ3Y interaction. In view of this, the use of the Migdal interaction in describing heavy-ion fusion is questionable.},
doi = {10.1134/S1063778816040104},
journal = {Physics of Atomic Nuclei},
number = 4,
volume = 79,
place = {United States},
year = 2016,
month = 7
}
  • Using Fourier techniques, a comparison is made between calculations performed assuming a Woods-Saxon nuclear density and those made with a folding product density. (AIP)
  • The double-folding model is generalized for the calculation of nucleus-nucleus potential using the new version of the density-dependent M3Y interaction which reproduces consistently the equilibrium density and binding energy of the normal nuclear matter as well as the density and energy dependence of the nucleon optical potential. The exchange part of the heavy-ion optical potential is evaluated within a local density formalism, using the finite-range exchange components of the same interaction. The model is used successfully to describe the elastic {sup 12}C and {sup 16}O scattering data at low and medium energies. The influence of different density-dependent parameters (which determinemore » different nuclear equations of state) on the description of heavy-ion scattering is also discussed.« less
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  • The sensitivity of proton-nucleus elastic scattering to different nucleon-nucleon effective interactions is studied within the framework of the nonrelativistic full-folding model. Calculations of the nucleon-nucleus optical potential are made using the free nucleon-nucleon {ital t}-matrices generated from the Bonn, Paris, Hamada-Johnston, and Melbourne nucleon-nucleon potentials, whose full off-shell behavior is treated explicitly. Applications are made to {ital p}+{sup 40}Ca elastic scattering at energies of 200, 300, and 400 MeV within the full-folding framework. Calculations using the on-shell {ital t}{rho} model have been made for comparison. Both full-folding and {ital t}{rho} results show comparable sensitivity to the particular choice of effectivemore » interaction, demonstrating the importance of a realistic description of the nucleon-nucleon interaction both on and off the energy shell.« less