Abstract

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.

© 1966 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. K. Berkner, W. S. Cooper, S. N. Kaplan, and R. W. Pyle, Phys. Letters 16, 35 (1965).
    [Crossref]
  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).
    [Crossref]
  3. L. Spitzer, Physics of Fully Ionized Gases (Interscience Publishers Inc., New York, 1956), 2nd ed., p. 138.
  4. L. Spitzer, Phys. Fluids 1, 253 (1958).
    [Crossref]
  5. E. Hinnov and A. S. Bishop, Phys. Fluids 9, 195 (1966).
    [Crossref]
  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).
    [Crossref]
  9. J. 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).
    [Crossref]
  12. K. Bockasten, R. Hallin, and T. P. Hughes, Proc. Phys. Soc. (London) 81, 522 (1963).
    [Crossref]
  13. H. Bethe, Ann. Physik 5, 325 (1930).
    [Crossref]
  14. R. F. Post, Ann. Rev. Nucl. Sci. 9, 367 (1959).
    [Crossref]
  15. P. G. Burke, D. D. McVicar, and K. Smith, Proc. Phys. Soc. (London) 83, 397 (1964).
    [Crossref]
  16. M. J. Seaton, in Atomic and Molecular Processes, D. R. Bates, Ed. (Academic Press Inc., New York, 1962), p. 414.
  17. H. van Regemorter, Astrophys. J. 136, 906 (1963).
    [Crossref]
  18. I. C. Percival, Nucl. Fusion 6 (1966).
    [Crossref]
  19. K. Omidvar, Phys. Rev. 140A, 38 (1965).
    [Crossref]
  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).
    [Crossref]
  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).
    [Crossref]
  26. W. C. Lineberger, J. W. Hooper, and E. W. McDaniel, Phys. Rev. 141, 151 (1966).
    [Crossref]
  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.—TETP 24, 537 (1953).
  29. C. M. Varsavsky, Astrophys. J. Suppl. 6, 75 (1961).
    [Crossref]
  30. D. R. Bates and A. Damgaard, Phil. Trans. Roy. Soc. (London) A242, 101 (1949).
  31. E. Hinnov, Phys. Fluids 7, 130 (1964).
    [Crossref]
  32. A. W. Weiss, Astrophys. J. 138, 1262 (1963).
    [Crossref]

1966 (4)

E. Hinnov and A. S. Bishop, Phys. Fluids 9, 195 (1966).
[Crossref]

J. G. Hirschberg and E. Hinnov, Bull. Am. Phys. Soc. 11, 564 (1966).

I. C. Percival, Nucl. Fusion 6 (1966).
[Crossref]

W. C. Lineberger, J. W. Hooper, and E. W. McDaniel, Phys. Rev. 141, 151 (1966).
[Crossref]

1965 (5)

D. Rapp and P. Englander-Golden, J. Chem. Phys. 43, 1464 (1965).
[Crossref]

K. Omidvar, Phys. Rev. 140A, 38 (1965).
[Crossref]

A. S. Bishop and E. Hinnov, Bull. Am. Phys. Soc. 10, 196 (1965).

K. Berkner, W. S. Cooper, S. N. Kaplan, and R. W. Pyle, Phys. Letters 16, 35 (1965).
[Crossref]

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).
[Crossref]

1964 (4)

E. Hinnov, A. S. Bishop, A. Gibson, and F. W. Hofmann, Bull. Am. Phys. Soc. 9, 320 (1964).

P. G. Burke, D. D. McVicar, and K. Smith, Proc. Phys. Soc. (London) 83, 397 (1964).
[Crossref]

E. Hinnov, Phys. Fluids 7, 130 (1964).
[Crossref]

L. C. Johnson, E. Hinnov, F. W. Hofmann, and N. Rynn, Bull. Am. Phys. Soc. 9, 508 (1964).

1963 (7)

K. T. Dolder, M. F. A. Harrison, and P. C. Thonemann, Proc. Roy. Soc. (London) A274, 546 (1963).

A. W. Weiss, Astrophys. J. 138, 1262 (1963).
[Crossref]

H. van Regemorter, Astrophys. J. 136, 906 (1963).
[Crossref]

K. Bockasten, R. Hallin, and T. P. Hughes, Proc. Phys. Soc. (London) 81, 522 (1963).
[Crossref]

E. Hinnov, J. G. Hirschberg, F. W. Hofmann, and N. Rynn, Phys. Fluids 6, 1779 (1963).
[Crossref]

E. Hinnov and F. W. Hofmann, J. Opt. Soc. Am. 53, 1259 (1963).
[Crossref]

W. Stodiek and D. J. Grove, Bull. Am. Phys. Soc. 8, 155 (1963).

1961 (3)

B. C. Fawcett, B. B. Jones, and R. Wilson, Proc. Phys. Soc. (London) 78, 1223 (1961).
[Crossref]

K. T. Dolder, M. F. A. Harrison, and P. C. Thonemann, Proc. Roy. Soc. (London) A264, 367 (1961).

C. M. Varsavsky, Astrophys. J. Suppl. 6, 75 (1961).
[Crossref]

1959 (1)

R. F. Post, Ann. Rev. Nucl. Sci. 9, 367 (1959).
[Crossref]

1958 (1)

L. Spitzer, Phys. Fluids 1, 253 (1958).
[Crossref]

1955 (1)

A. B. Bolotin, I. B. Levinson, and L. I. Levin, Soviet Phys.—JETP 29, 391 (1955).

1953 (1)

A. B. Bolotin and A. P. Jucys, Soviet Phys.—TETP 24, 537 (1953).

1949 (1)

D. R. Bates and A. Damgaard, Phil. Trans. Roy. Soc. (London) A242, 101 (1949).

1930 (1)

H. Bethe, Ann. Physik 5, 325 (1930).
[Crossref]

Bates, D. R.

D. R. Bates and A. Damgaard, Phil. Trans. Roy. Soc. (London) A242, 101 (1949).

Berkner, K.

K. Berkner, W. S. Cooper, S. N. Kaplan, and R. W. Pyle, Phys. Letters 16, 35 (1965).
[Crossref]

Bethe, H.

H. Bethe, Ann. Physik 5, 325 (1930).
[Crossref]

Bishop, A. S.

E. Hinnov and A. S. Bishop, Phys. Fluids 9, 195 (1966).
[Crossref]

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).
[Crossref]

A. S. Bishop and E. Hinnov, Bull. Am. Phys. Soc. 10, 196 (1965).

E. Hinnov, A. S. Bishop, A. Gibson, and F. W. Hofmann, Bull. Am. Phys. Soc. 9, 320 (1964).

Bockasten, K.

K. Bockasten, R. Hallin, and T. P. Hughes, Proc. Phys. Soc. (London) 81, 522 (1963).
[Crossref]

Bolotin, A. B.

A. B. Bolotin, I. B. Levinson, and L. I. Levin, Soviet Phys.—JETP 29, 391 (1955).

A. B. Bolotin and A. P. Jucys, Soviet Phys.—TETP 24, 537 (1953).

Burke, P. G.

P. G. Burke, D. D. McVicar, and K. Smith, Proc. Phys. Soc. (London) 83, 397 (1964).
[Crossref]

Cooper, W. S.

K. Berkner, W. S. Cooper, S. N. Kaplan, and R. W. Pyle, Phys. Letters 16, 35 (1965).
[Crossref]

Damgaard, A.

D. R. Bates and A. Damgaard, Phil. Trans. Roy. Soc. (London) A242, 101 (1949).

Dolder, K. T.

K. T. Dolder, M. F. A. Harrison, and P. C. Thonemann, Proc. Roy. Soc. (London) A274, 546 (1963).

K. T. Dolder, M. F. A. Harrison, and P. C. Thonemann, Proc. Roy. Soc. (London) A264, 367 (1961).

Englander-Golden, P.

D. Rapp and P. Englander-Golden, J. Chem. Phys. 43, 1464 (1965).
[Crossref]

Fawcett, B. C.

B. C. Fawcett, B. B. Jones, and R. Wilson, Proc. Phys. Soc. (London) 78, 1223 (1961).
[Crossref]

Gibson, A.

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).
[Crossref]

E. Hinnov, A. S. Bishop, A. Gibson, and F. W. Hofmann, Bull. Am. Phys. Soc. 9, 320 (1964).

Grove, D. J.

W. Stodiek and D. J. Grove, Bull. Am. Phys. Soc. 8, 155 (1963).

Hallin, R.

K. Bockasten, R. Hallin, and T. P. Hughes, Proc. Phys. Soc. (London) 81, 522 (1963).
[Crossref]

Harrison, M. F. A.

K. T. Dolder, M. F. A. Harrison, and P. C. Thonemann, Proc. Roy. Soc. (London) A274, 546 (1963).

K. T. Dolder, M. F. A. Harrison, and P. C. Thonemann, Proc. Roy. Soc. (London) A264, 367 (1961).

Hinnov, E.

J. G. Hirschberg and E. Hinnov, Bull. Am. Phys. Soc. 11, 564 (1966).

E. Hinnov and A. S. Bishop, Phys. Fluids 9, 195 (1966).
[Crossref]

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).
[Crossref]

A. S. Bishop and E. Hinnov, Bull. Am. Phys. Soc. 10, 196 (1965).

L. C. Johnson, E. Hinnov, F. W. Hofmann, and N. Rynn, Bull. Am. Phys. Soc. 9, 508 (1964).

E. Hinnov, Phys. Fluids 7, 130 (1964).
[Crossref]

E. Hinnov, A. S. Bishop, A. Gibson, and F. W. Hofmann, Bull. Am. Phys. Soc. 9, 320 (1964).

E. Hinnov and F. W. Hofmann, J. Opt. Soc. Am. 53, 1259 (1963).
[Crossref]

E. Hinnov, J. G. Hirschberg, F. W. Hofmann, and N. Rynn, Phys. Fluids 6, 1779 (1963).
[Crossref]

Hirschberg, J. G.

J. G. Hirschberg and E. Hinnov, Bull. Am. Phys. Soc. 11, 564 (1966).

E. Hinnov, J. G. Hirschberg, F. W. Hofmann, and N. Rynn, Phys. Fluids 6, 1779 (1963).
[Crossref]

Hofmann, F. W.

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).
[Crossref]

E. Hinnov, A. S. Bishop, A. Gibson, and F. W. Hofmann, Bull. Am. Phys. Soc. 9, 320 (1964).

L. C. Johnson, E. Hinnov, F. W. Hofmann, and N. Rynn, Bull. Am. Phys. Soc. 9, 508 (1964).

E. Hinnov, J. G. Hirschberg, F. W. Hofmann, and N. Rynn, Phys. Fluids 6, 1779 (1963).
[Crossref]

E. Hinnov and F. W. Hofmann, J. Opt. Soc. Am. 53, 1259 (1963).
[Crossref]

Hooper, J. W.

W. C. Lineberger, J. W. Hooper, and E. W. McDaniel, Phys. Rev. 141, 151 (1966).
[Crossref]

Hughes, T. P.

K. Bockasten, R. Hallin, and T. P. Hughes, Proc. Phys. Soc. (London) 81, 522 (1963).
[Crossref]

Johnson, L. C.

L. C. Johnson, E. Hinnov, F. W. Hofmann, and N. Rynn, Bull. Am. Phys. Soc. 9, 508 (1964).

Jones, B. B.

B. C. Fawcett, B. B. Jones, and R. Wilson, Proc. Phys. Soc. (London) 78, 1223 (1961).
[Crossref]

Jucys, A. P.

A. B. Bolotin and A. P. Jucys, Soviet Phys.—TETP 24, 537 (1953).

Kaplan, S. N.

K. Berkner, W. S. Cooper, S. N. Kaplan, and R. W. Pyle, Phys. Letters 16, 35 (1965).
[Crossref]

Levin, L. I.

A. B. Bolotin, I. B. Levinson, and L. I. Levin, Soviet Phys.—JETP 29, 391 (1955).

Levinson, I. B.

A. B. Bolotin, I. B. Levinson, and L. I. Levin, Soviet Phys.—JETP 29, 391 (1955).

Lineberger, W. C.

W. C. Lineberger, J. W. Hooper, and E. W. McDaniel, Phys. Rev. 141, 151 (1966).
[Crossref]

McDaniel, E. W.

W. C. Lineberger, J. W. Hooper, and E. W. McDaniel, Phys. Rev. 141, 151 (1966).
[Crossref]

McVicar, D. D.

P. G. Burke, D. D. McVicar, and K. Smith, Proc. Phys. Soc. (London) 83, 397 (1964).
[Crossref]

Moore, C. E.

C. E. Moore, Atomic Energy Levels, NBS Circular 467,Washington, D. C., 1949.

Omidvar, K.

K. Omidvar, Phys. Rev. 140A, 38 (1965).
[Crossref]

Percival, I. C.

I. C. Percival, Nucl. Fusion 6 (1966).
[Crossref]

Post, R. F.

R. F. Post, Ann. Rev. Nucl. Sci. 9, 367 (1959).
[Crossref]

Pyle, R. W.

K. Berkner, W. S. Cooper, S. N. Kaplan, and R. W. Pyle, Phys. Letters 16, 35 (1965).
[Crossref]

Rapp, D.

D. Rapp and P. Englander-Golden, J. Chem. Phys. 43, 1464 (1965).
[Crossref]

Rynn, N.

L. C. Johnson, E. Hinnov, F. W. Hofmann, and N. Rynn, Bull. Am. Phys. Soc. 9, 508 (1964).

E. Hinnov, J. G. Hirschberg, F. W. Hofmann, and N. Rynn, Phys. Fluids 6, 1779 (1963).
[Crossref]

Seaton, M. J.

M. J. Seaton, in Atomic and Molecular Processes, D. R. Bates, Ed. (Academic Press Inc., New York, 1962), p. 414.

Smith, K.

P. G. Burke, D. D. McVicar, and K. Smith, Proc. Phys. Soc. (London) 83, 397 (1964).
[Crossref]

Spitzer, L.

L. Spitzer, Phys. Fluids 1, 253 (1958).
[Crossref]

L. Spitzer, Physics of Fully Ionized Gases (Interscience Publishers Inc., New York, 1956), 2nd ed., p. 138.

Stodiek, W.

W. Stodiek and D. J. Grove, Bull. Am. Phys. Soc. 8, 155 (1963).

Thonemann, P. C.

K. T. Dolder, M. F. A. Harrison, and P. C. Thonemann, Proc. Roy. Soc. (London) A274, 546 (1963).

K. T. Dolder, M. F. A. Harrison, and P. C. Thonemann, Proc. Roy. Soc. (London) A264, 367 (1961).

van Regemorter, H.

H. van Regemorter, Astrophys. J. 136, 906 (1963).
[Crossref]

Varsavsky, C. M.

C. M. Varsavsky, Astrophys. J. Suppl. 6, 75 (1961).
[Crossref]

Weiss, A. W.

A. W. Weiss, Astrophys. J. 138, 1262 (1963).
[Crossref]

Wilson, R.

B. C. Fawcett, B. B. Jones, and R. Wilson, Proc. Phys. Soc. (London) 78, 1223 (1961).
[Crossref]

Ann. Physik (1)

H. Bethe, Ann. Physik 5, 325 (1930).
[Crossref]

Ann. Rev. Nucl. Sci. (1)

R. F. Post, Ann. Rev. Nucl. Sci. 9, 367 (1959).
[Crossref]

Astrophys. J. (2)

H. van Regemorter, Astrophys. J. 136, 906 (1963).
[Crossref]

A. W. Weiss, Astrophys. J. 138, 1262 (1963).
[Crossref]

Astrophys. J. Suppl. (1)

C. M. Varsavsky, Astrophys. J. Suppl. 6, 75 (1961).
[Crossref]

Bull. Am. Phys. Soc. (5)

A. S. Bishop and E. Hinnov, Bull. Am. Phys. Soc. 10, 196 (1965).

L. C. Johnson, E. Hinnov, F. W. Hofmann, and N. Rynn, Bull. Am. Phys. Soc. 9, 508 (1964).

W. Stodiek and D. J. Grove, Bull. Am. Phys. Soc. 8, 155 (1963).

E. Hinnov, A. S. Bishop, A. Gibson, and F. W. Hofmann, Bull. Am. Phys. Soc. 9, 320 (1964).

J. G. Hirschberg and E. Hinnov, Bull. Am. Phys. Soc. 11, 564 (1966).

J. Chem. Phys. (1)

D. Rapp and P. Englander-Golden, J. Chem. Phys. 43, 1464 (1965).
[Crossref]

J. Opt. Soc. Am. (1)

Nucl. Fusion (1)

I. C. Percival, Nucl. Fusion 6 (1966).
[Crossref]

Phil. Trans. Roy. Soc. (London) (1)

D. R. Bates and A. Damgaard, Phil. Trans. Roy. Soc. (London) A242, 101 (1949).

Phys. Fluids (5)

E. Hinnov, Phys. Fluids 7, 130 (1964).
[Crossref]

E. Hinnov, J. G. Hirschberg, F. W. Hofmann, and N. Rynn, Phys. Fluids 6, 1779 (1963).
[Crossref]

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).
[Crossref]

L. Spitzer, Phys. Fluids 1, 253 (1958).
[Crossref]

E. Hinnov and A. S. Bishop, Phys. Fluids 9, 195 (1966).
[Crossref]

Phys. Letters (1)

K. Berkner, W. S. Cooper, S. N. Kaplan, and R. W. Pyle, Phys. Letters 16, 35 (1965).
[Crossref]

Phys. Rev. (2)

W. C. Lineberger, J. W. Hooper, and E. W. McDaniel, Phys. Rev. 141, 151 (1966).
[Crossref]

K. Omidvar, Phys. Rev. 140A, 38 (1965).
[Crossref]

Proc. Phys. Soc. (London) (3)

B. C. Fawcett, B. B. Jones, and R. Wilson, Proc. Phys. Soc. (London) 78, 1223 (1961).
[Crossref]

K. Bockasten, R. Hallin, and T. P. Hughes, Proc. Phys. Soc. (London) 81, 522 (1963).
[Crossref]

P. G. Burke, D. D. McVicar, and K. Smith, Proc. Phys. Soc. (London) 83, 397 (1964).
[Crossref]

Proc. Roy. Soc. (London) (2)

K. T. Dolder, M. F. A. Harrison, and P. C. Thonemann, Proc. Roy. Soc. (London) A264, 367 (1961).

K. T. Dolder, M. F. A. Harrison, and P. C. Thonemann, Proc. Roy. Soc. (London) A274, 546 (1963).

Soviet Phys.—JETP (1)

A. B. Bolotin, I. B. Levinson, and L. I. Levin, Soviet Phys.—JETP 29, 391 (1955).

Soviet Phys.—TETP (1)

A. B. Bolotin and A. P. Jucys, Soviet Phys.—TETP 24, 537 (1953).

Other (3)

M. J. Seaton, in Atomic and Molecular Processes, D. R. Bates, Ed. (Academic Press Inc., New York, 1962), p. 414.

L. Spitzer, Physics of Fully Ionized Gases (Interscience Publishers Inc., New York, 1956), 2nd ed., p. 138.

C. E. Moore, Atomic Energy Levels, NBS Circular 467,Washington, D. C., 1949.

Cited By

OSA participates in Crossref's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (8)

F. 1
F. 1

Time behavior of the ohmic heating current, the electron density, and the conductivity temperature in the discharge.

F. 2
F. 2

Time behavior of the intensities of resonance multiplets of the neon ions.

F. 3
F. 3

Simplified energy-level diagram of the neon ions, showing the average ionization potentials for the 2s and 2p electrons, and the excitation potentials for the resonance multiplets measured in the present work.

F. 4
F. 4

Comparison of the empirical excitation cross sections used in the present work, with various calculations. The abscissa is the incident energy of the electron in units of the excitation potential.

F. 5
F. 5

Temperature dependence of the excitation-rate coefficient and the temperature ranges relevant to the present paper.

F. 6
F. 6

Comparison of measured ionization cross sections for He+ and Ne+ with empirical formulas used for evaluation of ionization rates of neon.

F. 7
F. 7

Neon-ion concentrations deduced from the measured light intensities, compared with total neon density estimated from the initial density and the time behavior of the discharge.

F. 8
F. 8

Comparison of the ionization-rate coefficients calculated from assumed cross sections, with the rate coefficients deduced from the time behavior of the ion concentrations.

Tables (1)

Tables Icon

Table I Comparison of absorption oscillator strengths deduced from the measured multiplet intensities with various calculations.

Equations (14)

Equations on this page are rendered with MathJax. Learn more.

τ c = 43 / T e msec ,
σ = σ 0 e ln U / U ,
σ 0 = f ( E H / E x ) 2 ,
σ = σ 0 e ln 2 U / U
S x = σ 0 e ( 8 E x / π m ) 1 2 Φ ( y ) ,
Φ ( y ) = y 1 2 { ln 2 exp ( y ) + y t 1 exp ( t ) d t } .
σ 0 i = b q ( E H / Ē i ) 2 ,
σ i = σ 0 i e ( ln U / U ) ( 1 U 2 )
S j j + 1 = σ 0 i e ( 8 Ē i π m ) 1 2 y i 1 2 y i t 1 exp ( t ) d t ,
I j = N j N e S x j photons / cm 3 · sec ,
N 2 / N 2 1.5 ; N 3 / N 3 2.0 ; N 4 / N 4 1.6 ; N 5 / N 5 2.3 ; N 6 / N 6 7 .
N 2 / N 2 = 1.3 ; N 3 / N 3 = 2.2 ; N 4 / N 4 = 1.3 ; N 5 / N 5 = 1.6 ; N 6 / N 6 = 3 ,
d N j / d t = N j 1 N e S j 1 j N j N e S j j + 1 N j / τ c ,
S ¯ j j + 1 [ N c ( t j ) Δ t j ] 1 ,