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Related Experiment Videos

In-flight radiation measurements on STS-60.

G D Badhwar1, M J Golightly, A Konradi

  • 1Space Radiation Analysis Group, NASA Johnson Space Center, Houston, TX 77058-3696, USA.

Radiation Measurements
|January 1, 1996
PubMed
Summary

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This joint US-Russia study compared space radiation dosimetry on STS-60, finding good agreement between methods. Spacecraft attitude significantly impacted radiation dose rates, highlighting the need for accurate environmental monitoring.

Area of Science:

  • Space Science and Radiation Dosimetry
  • International Collaboration in Space Research

Background:

  • The Shuttle-Mir Science Program (Phase 1) facilitated joint investigations between the US and Russia.
  • Understanding the space radiation environment is critical for astronaut safety and mission planning.

Purpose of the Study:

  • To conduct the first direct comparison of various dosimetric measurement techniques between the US and Russia.
  • To characterize the radiation environment aboard Space Shuttle flight STS-60.

Main Methods:

  • Utilized a variety of instruments to measure crew radiation exposure, absorbed doses, neutron fluence, dose equivalent, linear energy transfer (LET) spectra, and proton energy spectra.
  • Employed tissue equivalent proportional counters (TEPCs) and thermoluminescent detectors (TLDs) for radiation measurements.
Keywords:
NASA Center JSCNASA Discipline Number 45-10NASA Discipline Radiation HealthNASA Program Radiation HealthNon-NASA Center

Related Experiment Videos

  • Analyzed trapped and galactic cosmic radiation, including the effects of spacecraft attitude on dose rates.

    • Main Results:

    • Demonstrated good general agreement between US and Russian dosimetric measurements.
    • Observed that the AP8 Min trapped proton model overestimates absorbed dose by approximately 1.8 times.
    • Measured absorbed dose rates of ~298.5 microGy/day, with significant variations (up to a factor of 2) due to spacecraft attitude changes.

    Conclusions:

    • The study validated the effectiveness of multiple dosimetric techniques through international collaboration.
    • Spacecraft attitude is a significant factor influencing radiation dose rates in low-Earth orbit.
    • The westward drift of the South Atlantic Anomaly (SAA) was estimated at 0.22 degrees/year.