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Updated: Feb 24, 2026

Expedited Radiation Biodosimetry by Automated Dicentric Chromosome Identification ADCI and Dose Estimation
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Inclusion of Radiation Environment Variability in Total Dose Hardness Assurance Methodology.

M A Xapsos1, C Stauffer2, A Phan2

  • 1With NASA Goddard Space Flight Center, Greenbelt, MD, 20771 USA.

IEEE Transactions on Nuclear Science
|August 15, 2017
PubMed
Summary
This summary is machine-generated.

Space radiation variability significantly impacts parts categorization for total dose hardness. A new approach uses current models and failure probability, replacing radiation design margins for better mission assurance.

Keywords:
displacement damage doseradiation design marginradiation hardness assurancetotal ionizing dose

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Area of Science:

  • Space radiation physics
  • Electronic component reliability

Background:

  • Space radiation environment poses significant risks to electronic components.
  • Current total dose hardness assurance methods may not fully account for environmental variability.

Purpose of the Study:

  • Investigate the impact of space radiation environment variability on parts categorization.
  • Develop a modified approach for total dose hardness assurance.

Main Methods:

  • Analysis of space radiation environment models.
  • Development of a new hardness assurance approach.
  • Replacement of the radiation design margin concept.

Main Results:

  • Variability in the space radiation environment has a significant impact on parts categorization.
  • The modified approach offers more consistent use of current environment models.
  • Failure probability during a mission is used instead of radiation design margins.

Conclusions:

  • The proposed method enhances the accuracy of hardness assurance by considering environmental variability.
  • Replacing radiation design margins with failure probability improves mission reliability predictions.
  • This study provides a more robust framework for ensuring electronic component survival in space radiation environments.