OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 56, Iss. 9 — Sep. 1, 1966
  • pp: 1179–1187

Excitation and Ionization Rates of Neon Ions in a Stellarator Discharge

EINAR HINNOV  »View Author Affiliations

JOSA, Vol. 56, Issue 9, pp. 1179-1187 (1966)

View Full Text Article

Acrobat PDF (1325 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



The intensities of various resonance multiplets of neon ions, from Ne II to Ne VIII, emitted by an ohmically heated hydrogen discharge of the C stellarator, with about 3% neon added, were measured with a calibrated grazing-incidence monochromator. The electron densities (Ne~1013 cm-3) were determined by means of 4-mm microwave interferometers, and the electron temperature (Te~10–50 eV from the electrical conductivity of the plasma. The neon-ion concentrations at the different states of ionization were calculated from the light intensities by means of an assumed energy dependence for the excitation cross sections, the magnitude of the cross sections being adjusted to make the sum of the calculated ion concentrations agree with the known total neon concentration. Atomic oscillator strengths deduced from the excitation-rate coefficients thus obtained, were found to be in reasonable agreement with various calculations. Ionization-rate coefficients were deduced from the time behavior of the ion concentrations and the known particle-confinement time in the discharge. As compared with expected values, the measured rate coefficients appear to be increasingly too large with successive states of ionization. The most likely reason for the discrepancies is a possible deviation from Maxwellian electron-energy distribution in the discharge, to which these rate coefficients would be particularly sensitive.

EINAR HINNOV, "Excitation and Ionization Rates of Neon Ions in a Stellarator Discharge," J. Opt. Soc. Am. 56, 1179-1187 (1966)

Sort:  Author  |  Year  |  Journal  |  Reset


  1. K. Berkner, W. S. Cooper, III, S. N. Kaplan, and R. W. Pyle, Phys. Letters 16, 35 (1965).
  2. A. S. Bishop, A. Gibson, E. Hinnov, and F. W. Hofmann, Phys. Fluids 8, 1541 (1965); R. M. Sinclair, S. Yoshikawa, W. L. Harries, K. M. Young, K. E. Weimer, and J. L. Johnson, Phys. Fluids 8, 118 (1965).
  3. L. Spitzer, Jr., Physics of Fully Ionized Gases (lnterscience Publishers, Inc., New York, 1956), 2nd ed., p. 138.
  4. L. Spitzer, Jr., Phys. Fluids 1, 253 (1958).
  5. E. Hinnov and A. S. Bishop, Phys. Fluids 9, 195 (1966).
  6. W. Stodiek and D. J. Grove, Bull. Am. Phys. Soc. 8, 155 (1963).
  7. E. Hinnov, A. S. Bishop, A. Gibson, and F. W. Hofmann, Bull. Am. Phys. Soc. 9, 320 (1964).
  8. E. Hinnov and F. W. Hofmann, J. Opt. Soc. Am. 53, 1259 (1963).
  9. S. G. Hirschberg and E. Hinnov, Bull. Am. Phys. Soc. 11, 564 (1966).
  10. C. E. Moore, Atomic Energy Levels, NBS Circular 467, Washington, D. C., 1949.
  11. B. C. Fawcett, B. B. Jones, and R. Wilson, Proc. Phys. Soc. (London) 78, 1223 (1961).
  12. K. Bockasten, R. Hallin, and T. P. Hughes, Proc. Phys. Soc. (London) 81, 522 (1963).
  13. H. Bethe, Ann. Physik 5, 325 (1930).
  14. R. F. Post, Ann. Rev. Nucl. Sci. 9, 367 (1959).
  15. p. G. Burke, D. D. McVicar, and K. Smith, Proc. Phys. Soc. (London) 83, 397 (1964).
  16. M. J. Seaton, in Atomtic and Molecular Processes, D. R. Bates, Ed. (Academic Press Inc., New York, 1962), p. 414.
  17. H. van Regemorter, Astrophys. J. 136, 906 (1963).
  18. I. C. Percival, Nucl. Fusion 6 (1966).
  19. K. Omidvar, Phys. Rev. 140A, 38 (1965).
  20. A. S. Bishop and E. Hinnov, Bull. Am. Phys. Soc. 10, 196 (1965).
  21. E. Hinnov, J. G. Hirschberg, F. W. Hofmann, and N. Rynn, Phys. Fluids 6, 1779 (1963).
  22. L. C. Johnson, E. Hinnov, F. W. Hofmann, and N. Rynn, Bull. Am. Phys. Soc. 9, 508 (1964).
  23. K. T. Dolder, M. F. A. Harrison, and P. C. Thonemann, Proc. Roy. Soc. (London) A264, 367 (1961).
  24. K. T. Dolder, M. F. A. Harrison, and P. C. Thonemann, Proc. Roy. Soc. (London) A274, 546 (1963).
  25. D. Rapp and P. Englander-Golden, J. Chem. Phys. 43, 1464 (1965).
  26. W. C. Lineberger, J. W. Hooper, and E. W. McDaniel, Phys. Rev. 141, 151 (1966).
  27. A. B. Bolotin, I. B. Levinson, and L. I. Levin, Soviet Phys.—JETP 29, 391 (1955).
  28. A. B. Bolotin and A. P. Jucys, Soviet Phys.—JETP 24, 537 (1953).
  29. C. M. Varsavsky, Astrophys. J. Suppl. 6, 75 (1961).
  30. D. R. Bates and A. Damgaard, Phil. Trans. Roy. Soc. (London) A242, 101 (1949).
  31. E. Hinnov, Phys. Fluids 7, 130 (1964).
  32. A. W. Weiss, Astrophys. J. 138, 1262 (1963).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited