Study of ${}^6$He+${}^{12}$C Elastic Scattering Using a Microscopic Optical Potential

Abstract

The ${}^6$He+${}^{12}$C elastic scattering data at beam energies of 3, 38.3 and 41.6 MeV/nucleon are studied utilizing the microscopic optical potentials obtained by a double-folding procedure and also by using those inherent in the high-energy approximation. The calculated optical potentials are based on the neutron and proton density distributions of colliding nuclei established in an appropriate model for ${}^6$He and obtained from the electron scattering form factors for ${}^{12}$C. The depths of the real and imaginary parts of the microscopic optical potentials are considered as fitting parameters. At low energy the volume optical potentials reproduce sufficiently well the experimental data. At higher energies, generally, additional surface terms having form of a derivative of the imaginary part of the microscopic optical potential are needed. The problem of ambiguity of adjusted optical potentials is resolved requiring the respective volume integrals to obey the determined dependence on the collision energy. Estimations of the Pauli blocking effects on the optical potentials and cross sections are also given and discussed. Conclusions on the role of the aforesaid effects and on the mechanism of the considered processes are made.

12 pages, 9 figures, accepted for publication in Physical Review C

References in corpus (12)

• Microscopic Calculation of in-Medium Nucleon-Nucleon Cross Ssections
• Microscopic Calculation of in-Medium Proton-Proton Cross Sections
• Alternative evaluations of halos in nuclei
• Pauli blocking and medium effects in nucleon knockout reactions
• The Glauber model and the heavy ion reaction cross section
• Calculations of ${}^6$He+p elastic scattering cross sections using folding approach and high-energy approximation for the optical potential
• Isospin dependence of 6He+p optical potential and the symmetry energy
• Global Optical Potential for the Elastic Scattering of ${}^6$He at Low Energies
• Calculations of ${}^8$He+p Elastic Cross Sections Using Microscopic Optical Potential
• Comparison of optical model results from a microscopic Schrödinger approach to nucleon-nucleus elastic scattering with those from a global Dirac phenomenology
• The optical potential of ${}^6$He in the eikonal approximation
• Imaginary deuteron optical potential due to elastic and inelastic breakup

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• Probing the exotic structure of ${}^8$B by its elastic scattering and breakup reaction on nuclear targets
• Pre-equilibrium mechanisms in the93Nb(p,alpha) inclusive reaction at incident energies from 65 to 160 MeV
• Microscopic analysis of quasielastic scattering and breakup reactions of neutron-rich nuclei ${}^{12,14}$Be