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Related Experiment Videos

Cosmic rays and dosimetry at aviation altitudes.

D O'Sullivan1, D Zhou, W Heinrich

  • 1Dublin Institute for Advanced Studies (DIAS), Astrophysics Section, Dublin, Ireland.

Radiation Measurements
|May 25, 2002
PubMed
Summary

Aircrew exposure to cosmic radiation is a concern. CR-39 detectors measured radiation at aircraft altitudes, validating techniques against simulated fields for accurate dose assessment.

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Area of Science:

  • Atmospheric physics and radiation dosimetry.
  • Nuclear track detector applications in aviation dosimetry.

Background:

  • Growing concerns about cosmic radiation effects on aircrew health.
  • Need for precise measurements of atmospheric neutral and charged particle radiation at flight altitudes.

Purpose of the Study:

  • To measure charge and LET spectra of radiation at aircraft altitudes using CR-39 detectors.
  • To analyze short-range tracks from high LET particles, primarily from neutron interactions.
  • To validate the CR-39 detector technique by comparing measurements with a simulated aviation radiation field.

Main Methods:

  • Deployment of CR-39 nuclear track detectors on subsonic and supersonic aircraft.
  • Analysis of short-range tracks produced by high LET particles.
  • Calibration and validation using the CERN-CEC field, simulating aviation radiation environments.

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Main Results:

  • Successful measurement of charge and LET spectra at aircraft altitudes.
  • Identification of radiation components primarily from neutron interactions.
  • Good agreement between CR-39 detector measurements and dose values from heavy ion calibration at the CERN-CEC field.

Conclusions:

  • CR-39 detectors are effective for long-term, passive measurement of radiation fields at aviation altitudes.
  • The technique accurately characterizes high LET particle contributions, crucial for aircrew radiation dose assessment.
  • Validated methodology provides reliable data for understanding and mitigating radiation risks in aviation.