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Multiple-scattering effects in quasielastic alpha-4He scattering

F A Cucinotta1, L W Townsend, J W Wilson

  • 1NASA Langley Research Center, Hampton, Virginia 23665.

Physical Review. C, Nuclear Physics
|October 1, 1992
PubMed
Summary
This summary is machine-generated.

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Multiple scattering describes the quasielastic peak in nucleus-nucleus collisions. Multiple knockout and projectile excitation are crucial for large energy transfers in alpha-4He scattering.

Area of Science:

  • Nuclear physics
  • High-energy particle collisions

Background:

  • Understanding the quasielastic peak in nucleus-nucleus collisions is essential for nuclear structure studies.
  • Previous models often simplified the complex interactions involved in high-energy scattering events.

Purpose of the Study:

  • To derive a multiple-scattering series for the quasielastic peak in nucleus-nucleus collisions.
  • To investigate the impact of multiple knockout and projectile excitation on scattering dynamics.
  • To evaluate the accuracy of approximations for higher-order inelastic collision terms.

Main Methods:

  • Utilized the high-energy optical model to develop a multiple-scattering series.
  • Analyzed inclusive alpha-4He scattering at 7 GeV/c.
  • Applied approximations for forward-peaked wave functions to evaluate inelastic collision terms.
Keywords:
NASA Discipline Number 04-10NASA Discipline Radiation HealthNASA Program Radiation Health

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Main Results:

  • The derived multiple-scattering series effectively describes the quasielastic peak.
  • Multiple knockout of target nucleons and internal projectile excitation significantly influence outcomes for large energy loss and momentum transfers.
  • Approximations for higher-order inelastic terms proved accurate for forward-peaked wave functions.

Conclusions:

  • The multiple-scattering approach provides a robust framework for analyzing quasielastic scattering.
  • Acknowledging multiple interactions and internal excitations is vital for accurate modeling of high-energy nucleus-nucleus collisions.
  • The employed approximations offer a computationally efficient yet reliable method for theoretical studies.