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Related Experiment Videos

New techniques for predicting solar proton fluences for radiation effects applications.

M A Xapsos1, G P Summers, P Shapiro

  • 1Naval Research Laboratory, Washington, DC 20375, USA.

IEEE Transactions on Nuclear Science
|December 1, 1996
PubMed
Summary

Solar proton events pose radiation risks to geosynchronous satellites. New probabilistic models, using extreme value theory, simplify risk assessment for single and multiple space radiation events.

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Area of Science:

  • Space physics
  • Astrophysics
  • Radiation science

Background:

  • Geosynchronous satellites face significant radiation exposure from solar proton events.
  • These events occur unpredictably during solar cycles, posing risks to critical satellite components like optical imagers, memory, and solar cells.

Purpose of the Study:

  • To develop new probabilistic descriptions for assessing mission risks from solar proton events.
  • To provide applicable forms for evaluating both single event and cumulative radiation fluence.

Main Methods:

  • Application of extreme value theory to model solar proton event occurrences.
  • Analysis of recent solar proton event data.
  • Development of simplified probabilistic models.

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Main Results:

  • New, simpler probabilistic models for space radiation risk assessment.
  • Models applicable to both single and cumulative solar proton event fluences.
  • Incorporation of recent solar event data.

Conclusions:

  • The developed models offer a more accessible and accurate method for evaluating satellite mission risks.
  • These findings can be readily integrated into existing space mission design and analysis software.
  • Improved understanding of solar proton event impacts on geosynchronous missions.