Impact light flash studies: Temperature, Ejecta, Vaporization

  • G. Eichhorn
2 In Measurement of Interplanetary Dust 2.2 Lunar Studies and Simulation Experiments
Part of the Lecture Notes in Physics book series (LNP, volume 48)


Impact experiments have been performed with the 2 MV dust accelerator; the dependence of the maximum light flash energy and intensity on the projectile mass and velocity has been determined experimentally. The temperature of the radiating gas and plasma was estimated to be in the range from 2500K to 5000K, depending on the impact velocity. The distribution of the maximum ejecta speed as well as the normalized distribution of ejected mass have been determined as a function of the ejection angle. A rough estimate of the degree of vaporization of the displaced mass was obtained.


Impact Velocity Spectral Distribution Secondary Particle Black Body Radiation Light Flash 
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  1. Eichhorn, G. (1975), “Measurements of the Light Flash Produced by High Velocity Particle Impact”, accepted for publication in Planet. Space Sci.Google Scholar
  2. Friichtenicht, J.F. (1965), “Investigation of High-Speed Impact Phenomena”, NASA Contr. No. NA Sw-936.Google Scholar
  3. Jean, B., and Rollins, T.L. (1970), “Radiation from Hypervelocity Generated Plasma”, AIAA Journal, Vol. 8, No. 10, p. 1742.Google Scholar
  4. Rollins, T.L., and Jean, B. (1968), “Impact Flash for Micrometeoroid Detection”, Com. Dev. Report 9899/FR1, NASA Contr. No. NAS 9-6790.Google Scholar

Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • G. Eichhorn
    • 1
  1. 1.Max-Planck-Institut für KernphysikHeidelbergGermany

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