Abstract

Nd I and Nd II spectra emitted by an electrodeless tube have been observed between 2450 and 40 500 Å. By means of 25 000 wavelengths measured with an automatic comparator and of the Zeeman patterns of the strongest lines, about 1500 energy levels have been found. Their interpretation was carried out with the use of isotopic-shift data and empirical parametric calculations. The present state of the classification is described. The main features of the 15 known configurations and some results of theoretical calculations are given.

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  1. W. E. Albertson, G. R. Harrison, and J. R. McNally, Phys. Rev. 61, 167 (1942).
  2. Ph. Schuurmans, Physica 11, 419 (1946).
  3. P. F. A. Klinkenberg, thesis, Amsterdam, 1955.
  4. G. E. M. A. Hassan, thesis, Amsterdam, 1962.
  5. See for instance the footnote on p. 42 of B. G. Wybourne, Spectroscopic Properties of Rare Earths (Wiley-Interscience, New York, 1965).
  6. P. R. Rao and G. Gluck, Proc. Roy. Soc. (London) A 277, 540 (1964).
  7. F. S. Tomkins and M. Fred, Appl. Opt. 2, 715 (1963).
  8. J. Vergès, Spectrochim. Acta 24B, 177 (1969).
  9. A. Girard, Appl. Opt. 2, 79 (1963).
  10. R. Hoekstra, thesis, Amsterdam, 1969.
  11. J. Blaise, J. Chevillard, J. Vergès, and J. F. Wyart, Spectrochim. Acta 25B, 333 (1970).
  12. C. Morillon, Spectrochim. Acta B, 25B, 513 (1970).
  13. J. F. Wyart, J. Phys. 31, 559 (1970).
  14. J. F. Wyart, J. Thèse de Doctorat de 3ème Cycle, Orsay, 1968.
  15. J. Reader and J. Sugar, J. Opt. Soc. Am. 56, 1189 (1966).
  16. P. F. A. Klinkenberg, Physica 11, 327 (1945).
  17. G. Nöldeke and A. Steudel, Z. Physik 137, 632 (1954).
  18. J. Blaise, theèse, Paris, 1957.
  19. Y. P. Dontsov, V. A. Morosov, and A. R. Striganov, Opt. Spectrosk. 8, 6 (1960).
  20. P. R. Rao and G. Gluck, Proc. Roy. Soc. (London) A 277, 540 (1964).
  21. S. Gerstenkorn, J. M. Helbert, and R. Chabbal, Compt. Rend. 261, 1232 (1964).

Albertson, W. E.

W. E. Albertson, G. R. Harrison, and J. R. McNally, Phys. Rev. 61, 167 (1942).

Blaise, J.

J. Blaise, theèse, Paris, 1957.

J. Blaise, J. Chevillard, J. Vergès, and J. F. Wyart, Spectrochim. Acta 25B, 333 (1970).

Chabbal, R.

S. Gerstenkorn, J. M. Helbert, and R. Chabbal, Compt. Rend. 261, 1232 (1964).

Chevillard, J.

J. Blaise, J. Chevillard, J. Vergès, and J. F. Wyart, Spectrochim. Acta 25B, 333 (1970).

Dontsov, Y. P.

Y. P. Dontsov, V. A. Morosov, and A. R. Striganov, Opt. Spectrosk. 8, 6 (1960).

Fred, M.

F. S. Tomkins and M. Fred, Appl. Opt. 2, 715 (1963).

Gerstenkorn, S.

S. Gerstenkorn, J. M. Helbert, and R. Chabbal, Compt. Rend. 261, 1232 (1964).

Girard, A.

A. Girard, Appl. Opt. 2, 79 (1963).

Gluck, G.

P. R. Rao and G. Gluck, Proc. Roy. Soc. (London) A 277, 540 (1964).

P. R. Rao and G. Gluck, Proc. Roy. Soc. (London) A 277, 540 (1964).

Harrison, G. R.

W. E. Albertson, G. R. Harrison, and J. R. McNally, Phys. Rev. 61, 167 (1942).

Hassan, G. E. M. A.

G. E. M. A. Hassan, thesis, Amsterdam, 1962.

Helbert, J. M.

S. Gerstenkorn, J. M. Helbert, and R. Chabbal, Compt. Rend. 261, 1232 (1964).

Hoekstra, R.

R. Hoekstra, thesis, Amsterdam, 1969.

Klinkenberg, P. F. A.

P. F. A. Klinkenberg, Physica 11, 327 (1945).

P. F. A. Klinkenberg, thesis, Amsterdam, 1955.

McNally, J. R.

W. E. Albertson, G. R. Harrison, and J. R. McNally, Phys. Rev. 61, 167 (1942).

Morillon, C.

C. Morillon, Spectrochim. Acta B, 25B, 513 (1970).

Morosov, V. A.

Y. P. Dontsov, V. A. Morosov, and A. R. Striganov, Opt. Spectrosk. 8, 6 (1960).

Nöldeke, G.

G. Nöldeke and A. Steudel, Z. Physik 137, 632 (1954).

Rao, P. R.

P. R. Rao and G. Gluck, Proc. Roy. Soc. (London) A 277, 540 (1964).

P. R. Rao and G. Gluck, Proc. Roy. Soc. (London) A 277, 540 (1964).

Reader, J.

J. Reader and J. Sugar, J. Opt. Soc. Am. 56, 1189 (1966).

Schuurmans, Ph.

Ph. Schuurmans, Physica 11, 419 (1946).

Steudel, A.

G. Nöldeke and A. Steudel, Z. Physik 137, 632 (1954).

Striganov, A. R.

Y. P. Dontsov, V. A. Morosov, and A. R. Striganov, Opt. Spectrosk. 8, 6 (1960).

Sugar, J.

J. Reader and J. Sugar, J. Opt. Soc. Am. 56, 1189 (1966).

Tomkins, F. S.

F. S. Tomkins and M. Fred, Appl. Opt. 2, 715 (1963).

Vergès, J.

J. Blaise, J. Chevillard, J. Vergès, and J. F. Wyart, Spectrochim. Acta 25B, 333 (1970).

J. Vergès, Spectrochim. Acta 24B, 177 (1969).

Wyart, J. F.

J. F. Wyart, J. Thèse de Doctorat de 3ème Cycle, Orsay, 1968.

J. F. Wyart, J. Phys. 31, 559 (1970).

J. Blaise, J. Chevillard, J. Vergès, and J. F. Wyart, Spectrochim. Acta 25B, 333 (1970).

Wybourne, B. G.

See for instance the footnote on p. 42 of B. G. Wybourne, Spectroscopic Properties of Rare Earths (Wiley-Interscience, New York, 1965).

Other

W. E. Albertson, G. R. Harrison, and J. R. McNally, Phys. Rev. 61, 167 (1942).

Ph. Schuurmans, Physica 11, 419 (1946).

P. F. A. Klinkenberg, thesis, Amsterdam, 1955.

G. E. M. A. Hassan, thesis, Amsterdam, 1962.

See for instance the footnote on p. 42 of B. G. Wybourne, Spectroscopic Properties of Rare Earths (Wiley-Interscience, New York, 1965).

P. R. Rao and G. Gluck, Proc. Roy. Soc. (London) A 277, 540 (1964).

F. S. Tomkins and M. Fred, Appl. Opt. 2, 715 (1963).

J. Vergès, Spectrochim. Acta 24B, 177 (1969).

A. Girard, Appl. Opt. 2, 79 (1963).

R. Hoekstra, thesis, Amsterdam, 1969.

J. Blaise, J. Chevillard, J. Vergès, and J. F. Wyart, Spectrochim. Acta 25B, 333 (1970).

C. Morillon, Spectrochim. Acta B, 25B, 513 (1970).

J. F. Wyart, J. Phys. 31, 559 (1970).

J. F. Wyart, J. Thèse de Doctorat de 3ème Cycle, Orsay, 1968.

J. Reader and J. Sugar, J. Opt. Soc. Am. 56, 1189 (1966).

P. F. A. Klinkenberg, Physica 11, 327 (1945).

G. Nöldeke and A. Steudel, Z. Physik 137, 632 (1954).

J. Blaise, theèse, Paris, 1957.

Y. P. Dontsov, V. A. Morosov, and A. R. Striganov, Opt. Spectrosk. 8, 6 (1960).

P. R. Rao and G. Gluck, Proc. Roy. Soc. (London) A 277, 540 (1964).

S. Gerstenkorn, J. M. Helbert, and R. Chabbal, Compt. Rend. 261, 1232 (1964).

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