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HZE particle effects in space.

G Horneck1

  • 1DLR, Institute of Aerospace Medicine, Koln, Germany.

Acta Astronautica
|November 1, 1994
PubMed
Summary
This summary is machine-generated.

Heavy ions (HZE particles) in cosmic radiation cause biological damage. Research traces injuries from single particle tracks in various organisms, but data on mammals is limited.

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Area of Science:

  • Radiobiology
  • Space Radiation Biology
  • Astrobiology

Background:

  • Heavy ions, known as HZE particles, are a significant component of ionizing radiation in space.
  • Understanding their biological interactions is crucial for space exploration and radiation protection.

Purpose of the Study:

  • To investigate the biological effects of individual HZE particle traversals.
  • To correlate physical particle data with observed biological outcomes.

Main Methods:

  • Developing methods for precise localization of HZE particle trajectories relative to biological targets.
  • Correlating physical particle characteristics with biological effects.

Main Results:

  • Single HZE particle traversals were linked to somatic mutations and chromosomal aberrations in plant seeds.

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  • Developmental disturbances and malformations were observed in insect and salt shrimp embryos.
  • Cell death and a long-ranging killing effect were noted around particle tracks in bacterial spores.

    • Conclusions:

    • HZE particles induce localized biological damage across diverse test systems.
    • While effects in resting and embryonic systems are documented, data on mammalian tissues and whole animals remains scarce.