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Forging the link between nuclear reactions and nuclear structure.

M H Mahzoon1, R J Charity2, W H Dickhoff1

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A new nonlocal optical potential accurately describes calcium-40 nucleus properties, including high-momentum nucleons crucial for understanding nuclear reactions and ground-state energy. This advances nuclear physics research.

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Area of Science:

  • Nuclear Physics
  • Quantum Mechanics

Background:

  • Accurate description of nuclear properties is essential for understanding nuclear structure and reactions.
  • Previous models struggled to simultaneously reproduce data above and below the Fermi energy.

Purpose of the Study:

  • To develop a comprehensive description of single-particle properties for the calcium-40 nucleus.
  • To investigate the impact of nonlocality in optical potentials on nuclear reactions and properties.

Main Methods:

  • Employed a nonlocal dispersive optical potential.
  • Simultaneously reproduced nuclear data above and below the Fermi energy.
  • Analyzed elastic differential cross sections and absorption profiles.

Main Results:

  • Nonlocality in absorptive potentials yields equivalent elastic cross sections but alters angular momentum absorption profiles.
  • Nonlocality is crucial for accurately representing particle number and nuclear charge density below the Fermi energy.
  • Incorporated spectral properties from (e, e'p) and (p, 2p) reactions, including high-momentum nucleons.

Conclusions:

  • The nonlocal optical potential provides a comprehensive description of calcium-40 single-particle properties.
  • High-momentum nucleons significantly contribute to the ground-state energy, suggesting residual attractive interactions.
  • This work offers insights into nuclear reaction mechanisms and the role of nonlocality.