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Related Experiment Videos

A method for calculating proton-nucleus elastic cross-sections.

R K Tripathi1, J W Wilson, F A Cucinotta

  • 1NASA Langley Research Center, Hampton, VA 23681-0001, USA. r.k.tripathi@larc.nasa.gov

Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms
|September 7, 2002
PubMed
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Researchers developed a method to extract nucleon-nucleon (N-N) cross-sections from experimental data. This advancement aids in calculating proton-nucleus elastic cross-sections, crucial for space mission radiation risk assessment.

Area of Science:

  • Nuclear Physics
  • High-Energy Physics
  • Computational Physics

Background:

  • Nucleon-nucleon (N-N) cross-sections are fundamental to understanding heavy-ion scattering.
  • Existing methods require accurate in-medium N-N cross-sections, which are challenging to obtain experimentally.
  • Accurate cross-section data is vital for radiation risk assessment in space exploration.

Purpose of the Study:

  • To develop and validate a method for directly extracting in-medium N-N cross-sections from experimental data.
  • To investigate the ratio of the real to imaginary parts of the two-body scattering amplitude in the medium.
  • To apply these extracted parameters to calculate proton-nucleus elastic cross-sections.

Main Methods:

  • Developed a novel experimental technique to determine in-medium N-N cross-sections.
Keywords:
NASA Center JSCNASA Center LaRCNASA Discipline Radiation Health

Related Experiment Videos

  • Utilized a coupled-channel approach, incorporating the NASA Langley Research Center's methodology.
  • Investigated the ratio of real to imaginary parts of the scattering amplitude through theoretical analysis and experimental data comparison.

    • Main Results:

    • Successfully extracted in-medium N-N cross-sections directly from experimental measurements.
    • Determined the ratio of real to imaginary parts of the two-body scattering amplitude in the medium.
    • Calculated proton-nucleus elastic cross-sections, showing excellent agreement with available experimental data.

    Conclusions:

    • The developed method provides a reliable way to obtain crucial in-medium N-N cross-sections.
    • The validated approach enhances the accuracy of heavy-ion scattering models.
    • This research directly contributes to improved radiation risk assessments for space missions.