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Related Experiment Videos

Galactic cosmic radiation model and its applications.

G D Badhwar1, P M O'Neill

  • 1NASA Johnson Space Center, Houston, TX 77058, USA.

Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)
|January 1, 1996
PubMed
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This study presents a galactic cosmic ray model based on solar modulation theory. It predicts radiation levels and their effects on electronics, validated by space shuttle data.

Area of Science:

  • Space Physics
  • Astrophysics
  • Cosmic Ray Physics

Background:

  • Galactic cosmic radiation (GCR) intensity varies with solar activity.
  • Understanding solar modulation is crucial for space missions and radiation protection.

Purpose of the Study:

  • Develop a predictive model for GCR energy spectra based on solar activity.
  • Compare the model's predictions with existing models and observational data.

Main Methods:

  • Utilized standard diffusion-convection theory for solar modulation.
  • Correlated modulation potential estimates (1954-1989) with Climax neutron rates and sunspot numbers.
  • Incorporated interplanetary magnetic field polarity into regression analysis.

Main Results:

Keywords:
NASA Center JSCNASA Discipline Radiation Health

Related Experiment Videos

  • Established regression lines for predicting future solar modulation.
  • Quantitatively compared model results with the Moscow State University (MSU) model.
  • Calculated linear energy transfer, light ion spectra, and single event upset rates.

Conclusions:

  • The developed model provides a method for predicting GCR modulation.
  • Model predictions show good agreement with Space Shuttle observational data.
  • The model is applicable to predicting radiation effects on electronic devices.