Advertisement

Astrophysics and Space Science

, Volume 188, Issue 1, pp 89–107 | Cite as

Populations of highly excited atoms and ions in the optically thin plasma

  • N. I. Rovenskaya
Article

Abstract

Treating it as a boundary-value problem, the equations of highly excited state populations of atoms and ions are theoretically studied in case of recombining plasma. Scattering and spontaneous transitions as well as those induced by background radiation, are taken into account in the kinetic equations. The kinetic coefficients for inelastic scattering of incident charged particles on highly excited atoms and ions have been calculated in the asymptotically exact case: 1.6×105 (z/n)2)T e −1 ≪1.

The distribution functions over the Rydberg states, analytically found, allow to determine amplification factor and optical depth of radio-recombination lines as functions of cosmic plasma parameters.

Keywords

Radiation Excited State Charged Particle Kinetic Equation Optical Depth 
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. Bateman, G. and Erdélyi, A.: 1970,Tables of Integral Transforms, Moscow State Publ. Co., 327 pp.Google Scholar
  2. Beigman, I. L.: 1980,Trud. Fis. Instituto AS USSR 119, 143 (in Russian).Google Scholar
  3. Beigman, I. L.: 1987,Trud. Fis. Instituto AS USSR 179, 160 (in Russian).Google Scholar
  4. Ershov, A. A., Il'yasov, Yu. P., Leht, E. E., Smirnov, G. T., Solodkov, B. T., and Sorochenko, P. L.: 1984,Pisma v Astron. Zh. 10, 833.Google Scholar
  5. Gee, C. S., Percival, I. C., Lodge, I. G., and Richards, D.: 1976,Monthly Notices Roy. Astron. Soc. 175, 209.Google Scholar
  6. Konovalenko, A. A.: 1984,Pisma v Astron. Zh. 10, 846.Google Scholar
  7. Konovalenko, A. A. and Sodin, L. G.: 1981,Pisma v Astron. Zh. 7, 402.Google Scholar
  8. Lavrentyev, M. A. and Shabat, B. V.: 1973,Methods of Functions of Complex Variable, Nauka, Moscow, 736 pp.Google Scholar
  9. Rovenskaya, N. I.: 1987,Kinemat. and phys. neb. těl. 3, 68.Google Scholar
  10. Sejnowski, T. J. and Hjellming, R. M.: 1969,Astrophys. J. 156, 915.Google Scholar
  11. Shaver, P. A.: 1975,Pramana 5, 1.Google Scholar
  12. Vainstein, L. A., Sobelman, I. I., and Ukov, E. A.: 1979,Excitation of Atoms and Spectral Lines Broadening, Nauka, Moscow, 319 pp.Google Scholar
  13. Walmsley, C. M. and Watson, W. D.: 1982,Astrophys. J. 260, 317.Google Scholar
  14. Zabreyko, P. P., Koshelev, A. I., Krasnoselsky, M. A., Mihlin, S. G., Rakovstik, L. S., and Stecenko, V. Ya.: 1968,Integral Equations, Nauka, Moscow, 448 pp.Google Scholar

Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • N. I. Rovenskaya
    • 1
  1. 1.Institute of Radio AstronomyAcademy of Sciences UkrSSRKharkovUSSR

Personalised recommendations