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Secondary radiations in spacecraft shieldings.

V E Dudkin1

  • 1Research Center for Spacecraft Radiation Safety, Moscow, Russia.

Radiation Measurements
|January 1, 1994
PubMed
Summary

This study addresses secondary radiation from heavy charged cosmic rays in spacecraft and biological tissues. It presents methods for calculating particle transport and cosmic ray doses, validated by space experiments.

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Multiplicities of secondaries in nuclear interactions, induced by 20Ne, 40Ar and 56Fe nuclei at 0.1-0.5 GeV/nucleon.

Nuclear physics. A·1994

Area of Science:

  • Space physics and radiation protection.
  • Nuclear and particle physics.
  • Astrobiology and space medicine.

Background:

  • Cosmic ray interactions with spacecraft shielding and biological tissues generate secondary radiation.
  • Accurate modeling of heavy charged particle transport is crucial for radiation safety.
  • Existing methods for calculating particle passage through matter require careful appraisal.

Purpose of the Study:

  • To discuss secondary radiation generation by heavy charged cosmic ray particles.
  • To recommend methods for calculating heavy charged particle transport and interaction cross sections.
  • To present calculations of cosmic ray doses in biological tissue, including secondary particle contributions.

Main Methods:

  • Utilizing total and differential inelastic interaction cross sections for transport calculations.
  • Appraising extensively used methods for heavy charged particle passage through matter.
  • Employing a verified set of radiation protection standards for calculations.

Main Results:

  • Calculations of heavy charged particle transport in shielding.
  • Assessment of methods for particle passage through matter.
  • Presentation of cosmic ray dose calculations in biological tissue, accounting for secondary particles.

Conclusions:

  • The study provides validated methods for assessing radiation hazards from heavy cosmic rays.
  • Calculations incorporating secondary particle contributions are essential for accurate dose estimations.
  • Experimental verification on the Cosmos series satellites confirms the reliability of the radiation protection standards used.

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