Energy Level (EL) References to Original Literature: Er

Erbium, Z = 68
Er I (EL)
  1. Cabezas, A. Y., Lindgren, I., and Marrus, R., Phys. Rev. 122, 1796 (1961).
  2. Doyle, W. M. and Marrus, R., Phys. Rev. 131, 1586 (1963).
  3. Goldschmidt, Z. B., Thesis, Hebrew Univ. Jerusalem, Israel, 487pp. (1968).
  4. Heilig, K., and Kircher, O., Z. Phys. 212, 243 (1968).
  5. Held, S., Israel, A. E. C. Report IA-1037, 163pp. (1966).
  6. Held, S., Astrophys. J. 167, 203 (1971).
  7. Lindner, J. W., and Davis, S. P., J. Opt. Soc. Am. 48, 542 (1958).
  8. Marquet, L. C., Thesis, Univ. California, Berkeley, 130pp. (1964).
  9. Marquet, L. C., and Behring, W. E., J. Opt. Soc. Am. 55, 471 (1965).
  10. Marquet, L. C., and Davis, S. P., J. Opt. Soc. Am. 56, 407 (1966).
  11. Meggers, W. F., Corliss, C. H., and Scribner, B. F., Nat. Bur. Stand. (U.S.) Monogr. 145, Part I, 403pp. (1975).
  12. Racah, G., Goldschmidt, Z. B., and Toaff, S., J. Opt. Soc. Am. 56, 407 (1966).
  13. Smith, K. F. and Spalding, I. J., Proc. R. Soc. London, Ser. A 265, 133 (1961).
  14. Spector, N., J. Opt. Soc. Am. 55, 576 (1965).
  15. Spector, N., J. Opt. Soc. Am. 56, 341 (1966).
  16. Spector, N., J. Opt. Soc. Am. 57, 308 (1967).
  17. Spector, N., J. Opt. Soc. Am. 61, 1350 (1971).
  18. Spector, N., Phys. Scr. 9, 313 (1974).
  19. Spector, N., and Held, S., Astrophys. J. 167, 193 (1971).
  20. van Kleef, T. A. M., and Koot, J. J. A., J. Opt. Soc. Am. 63, 1315A (1973).
  21. van Kleef, T. A. M., and Koot, J. J. A., unpublished material (1975).
  22. Vander Sluis, K. L., and McNally, Jr., J. R., J. Opt. Soc. Am. 59, 1202 (1969).
  23. Worden, E. F., Conway, J. G., Paisner, J. A., and Solarz, R. W., unpublished material (1977).
  24. Wyart, J. F., Koot, J. J. A., and van Kleef, T. A. M., Physica (Utrecht) 77, 159 (1974).
  25. Wyart, J. F., Koot, J. J. A., and van Kleef, T. A. M., unpublished material (1976).
Er II (EL)
  1. Goldschmidt, Z. B., J. Opt. Soc. Am. 53, 594 (1963).
  2. Judd, B. R. and Marquet, L. C., J. Opt. Soc. Am. 52, 504 (1962).
  3. Lindner, J. W., and Davis, S. P., J. Opt. Soc. Am. 48, 542 (1958).
  4. Marquet, L. C., and Davis, S. P., J. Opt. Soc. Am. 55, 471 (1955).
  5. McNally, Jr., J. R. and Vander Sluis, K. L., J. Opt. Soc. Am. 49, 200 (1959).
  6. Spector, N., Astrophys. J. 167, 205 (1971a).
  7. Spector, N., J. Opt. Soc. Am. 61, 672 (1971b).
  8. Spector, N., and Held, S., Astrophys. J. 167, 193 (1971).
  9. Sugar, J., and Reader, J., J. Opt. Soc. Am. 55, 1286 (1965).
  10. van Kleef, T. A. M., and Koot, J. J. A., unpublished material (1975).
  11. Vander Sluis, K. L. and McNally, Jr., J. R., J. Opt. Soc. Am. 60, 94 (1970).
  12. Wyart, J. F., and Koot, J. J. A., unpublished material (1975).
Er III (EL)
  1. Becher, J., Thesis, Johns Hopkins Univ., 134pp. (1966).
  2. Spector, N., J. Opt. Soc. Am. 63, 358 (1973).
  3. Sugar, J., and Reader, J., J. Chem. Phys. 59, 2083 (1973).
  4. van Kleef, Th. A. M., private communication (1975).
  5. Wyart, J. F., Blaise, J., and Camus, P., Phys. Scr. 9, 325 (1974).
  6. Wyart, J. F., Koot, J. J. A., and van Kleef, Th. A. M., Physica (Utrecht) 77, 159 (1974).
Er IV (EL)
  1. Carnall, W. T., Fields, P. R., and Rajnak, K., J. Chem. Phys. 49, 4424 (1968).
  2. Carnall, W. T., Fields, P. R., and Rajnak, K., unpublished material (1974).
  3. Carter, W. J., Thesis, Johns Hopkins Univ., Baltimore, 65pp. (1966).
  4. Dieke, G. H., Spectra and Energy Levels of Rare Earth Ions in Crystals, Ed. H. M. Crosswhite and H. Crosswhite, pp.294- 309 (Interscience Publishers, New York, 1968).
  5. Spector, N. and Sugar, J., J. Opt. Soc. Am. 66, 436 (1976).
  6. Sugar, J. and Reader, J., J. Chem. Phys. 59, 2083 (1973).
  7. Wybourne, B. G., J. Chem. Phys. 34, 279 (1961).
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