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Related Experiment Videos

Accurate universal parameterization of absorption cross sections.

R K Tripathi1, F A Cucinotta, J W Wilson

  • 1Southern Illinois University, Carbondale 62901, USA. rkt@hesb1.larc.nasa.gov

Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
|October 1, 1996
PubMed
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This study introduces a universal model for calculating nuclear reaction cross sections across a wide energy range. The new parameterization offers improved accuracy compared to previous methods for both nucleus-nucleus and proton-nucleus collisions.

Area of Science:

  • Nuclear Physics
  • High-Energy Physics
  • Quantum Mechanics

Background:

  • Predicting total reaction cross sections in nuclear collisions is crucial for understanding fundamental interactions.
  • Existing models often lack universality across different energy regimes and collision systems.

Purpose of the Study:

  • To develop a simple, universal parameterization for total reaction cross sections applicable to all colliding nuclei.
  • To provide a unified framework for nucleus-nucleus and proton-nucleus collisions.

Main Methods:

  • Developed a universal parameterization based on the physics of colliding nuclei.
  • Incorporated Coulomb interaction effects at lower energies.
  • Accounted for Pauli blocking effects at higher energies.
Keywords:
NASA Discipline Radiation Health

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Main Results:

  • The proposed parameterization accurately describes total reaction cross sections for various colliding nuclei.
  • It successfully treats proton-nucleus collisions as a specific case of nucleus-nucleus collisions.
  • Achieved better agreement with experimental data than previous models across the entire energy range (few A MeV to few A GeV).

Conclusions:

  • The universal parameterization provides a robust and accurate method for calculating nuclear reaction cross sections.
  • This model simplifies the analysis of nuclear collisions by offering a unified approach.
  • The findings have implications for nuclear structure and reaction dynamics research.