Advertisement

Effects of Charged Dust Grains

  • S. Hayakawa
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 55)

Abstract

Dust grains expelled by radiation pressure of stars are charged to potentials in the range 30–40 V in H I clouds. These grains may be responsible for the following phenomena which are otherwise hardly explicable. (1) A considerable fraction of electrons knocked-out by charged grains of high speeds have energies around 15 eV and produce singly ionized ions but not doubly ionized ones in accord with an ultraviolet observation of interstellar atoms and ions. (2) Transverse momentum transferred to grains by Coulomb scattering of ambient electrons and protons is greater than that by multiple scattering of cosmic ray protons, thus the former being more effective for the grain alignment than the latter. (3) At a shock front charge separation due to a large inertial mass of grains produces an electric field, thus accelerating charged particles and causing a drift of interstellar matter.

Keywords

Transverse Momentum Multiple Scattering Ionization Cross Section Charge Dust Coulomb Scattering 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Hayakawa, S.: 1974, Astrophys. Space Sci. 31, L13.ADSCrossRefGoogle Scholar
  2. Morton, D. C., Drake, J. F., Jenkins, F. B., Rogerson, J. B., Spitzer, L., and York, D. G.: 1973, Astrophys. J. Letters 181, L103.ADSCrossRefGoogle Scholar
  3. Rogerson, J. B., York, D. C., Drake, J. F., Jenkins, F. B., Morton, D. C., and Spitzer, L.: 1973, Astrophys. J. Letters 181, L110.ADSCrossRefGoogle Scholar
  4. Salpeter, E. E.: 1974, Proc. of the Symposium on Solid State Astrophysics, held at the University College, Cardiff, Wales, between 9–12 July, 1974; printed in Astrophys. J. 193, 579, 585.Google Scholar
  5. Salpeter, E. E. and Wickramasinghe, N. C.: 1969, Nature 222, 442.ADSCrossRefGoogle Scholar
  6. Sofue, Y. and Tosa, M.: 1974, Astron. Astrophys., in press.Google Scholar
  7. Wickramasinghe, N. C.: 1972, Monthly Notices Roy. Astron. Soc. 159, 269.ADSGoogle Scholar
  8. Wickramasinghe, N. C.: 1974, Astrophys. Space Sci. 28, 525.CrossRefGoogle Scholar

Copyright information

© D. Reidel Publishing Company, Dordrecht, Holland 1976

Authors and Affiliations

  • S. Hayakawa
    • 1
  1. 1.Dept. of PhysicsNagoya UniversityNagoyaJapan

Personalised recommendations