Abstract

High-resolution grating and Fourier transform spectroscopy measurements, using hollow-cathode and electrodeless discharge lamp sources, have resulted in a list of 92000 lines of U I and U II. The wave-number accuracy is about 0.003 cm<sup>−1</sup>. With this list and new Zeeman structure, isotope-shift, and <sup>233</sup>U hyperfine-structure spectrograms, we have found 500 new U I levels. We now know 1240 even levels between 7020 and 42000 cm<sup>−1</sup> and 360 odd levels up to 38000 cm<sup>−1</sup>. All levels expected to lie below 10000 cm<sup>−1</sup> have been found. Levels of five odd configurations (ƒ<sup>3</sup><i>ds</i><sup>2</sup>, ƒ<sup>3</sup><i>d</i><sup>2</sup><i>s</i>, ƒ<sup>4</sup><i>sp</i>, ƒ<sup>3</sup><i>ds</i>8<i>s</i>, ƒ<sup>4</sup><i>dp</i>) and seven even configurations (ƒ<sup>4</sup><i>s</i><sup>2</sup>, ƒ<sup>2</sup><i>d</i><sup>2</sup><i>s</i><sup>2</sup>, ƒ<sup>3</sup><i>s</i><sup>2</sup><i>p</i>, ƒ<sup>3</sup><i>dsp</i>, ƒ<sup>4</sup><i>ds</i>, ƒ<sup>3</sup><i>d</i><sup>2</sup><i>p</i>, ƒ<sup>3</sup><i>ds</i>8<i>p</i>) are now known.

© 1976 Optical Society of America

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  1. C. C. Kiess, C. J. Humphreys, and D. D. Laun, J. Res. Nat. Bur. Stand. 37, 57 (1946).
  2. Unless otherwise specified, the principal quantum numbers of the optical electrons are 5ƒ, 6d, 7s, and 7p.
  3. P. Schuurmans, Physica (Utrecht) 11, 419 (1946).
  4. J. C. Van den Bosch and G. J. Van den Berg, Physica (Utrecht) 15, 329 (1949).
  5. M. Diringer, Ann. Phys. (Leipz.) 10, 89 (1966).
  6. G. Guelachvili, Thèse 3e. cycle, Paris (1965).
  7. Z. Ben Ozman, Thèse 3e. cycle, Paris (1966).
  8. F. Guyon, Thèse 3e cycle, Orsay (1972).
  9. J. Vergès, Thèse, Orsay (1969).
  10. C. Morillon, Spectrochim. Acta Part B 25, 513 (1970).
  11. J. Blaise and A. Steudel, Z. Phys. 209, 311 (1968).
  12. L. J. Radziemski, Jr., D. W. Steinhaus, and R. Engleman, Jr., J. Opt. Soc. Am. 61, 1538 (1971).
  13. N. Spector, Phys. Rev. A 8, 3270 (1973).
  14. F. Guyon, J. Blaise, and J-F Wyart, J. Phys. (Paris) 35, 929 (1974).
  15. J. Vergès (private communication, 1975).
  16. D. W. Steinhaus, R. Engleman, Jr., and K. J. Fisher, Chem. Instrum. 3, 141 (1971).
  17. D. W. Steinhaus, J. Opt. Soc. Am. 50, 672 (1960).
  18. A. Giachetti, R. W. Stanley, and R. Zalubas, J. Opt. Soc. Am. 60, 474 (1970).
  19. S. Gerstenkorn, P. Luc, Cl. Bauche-Arnoult, and D. Merle, J. Phys. (Paris) 34, 805 (1973).
  20. C. B. Ross, J. Opt. Soc. Am. 60, 712 (1970).
  21. P. R. Rao, Proc. Indian Acad. Sci. Sec. A 58, 353 (1963).
  22. J. M. Gagné, S. Gerstenkorn, and J. M. Helbert, C. R. Acad. Sci. (Paris) 259, 3479 (1964).
  23. R. D. Cowan (private communications, 1972), and NASA Spec. Publ. 236, 151 (1971).
  24. L. Brewer, J. Opt. Soc. Am. 61, 1101 (1971).
  25. K. Rajnak (private communication, 1975).

Bauche-Arnoult, Cl.

S. Gerstenkorn, P. Luc, Cl. Bauche-Arnoult, and D. Merle, J. Phys. (Paris) 34, 805 (1973).

Blaise, J.

F. Guyon, J. Blaise, and J-F Wyart, J. Phys. (Paris) 35, 929 (1974).

J. Blaise and A. Steudel, Z. Phys. 209, 311 (1968).

Brewer, L.

L. Brewer, J. Opt. Soc. Am. 61, 1101 (1971).

Cowan, R. D.

R. D. Cowan (private communications, 1972), and NASA Spec. Publ. 236, 151 (1971).

Diringer, M.

M. Diringer, Ann. Phys. (Leipz.) 10, 89 (1966).

Engleman, Jr., R.

L. J. Radziemski, Jr., D. W. Steinhaus, and R. Engleman, Jr., J. Opt. Soc. Am. 61, 1538 (1971).

D. W. Steinhaus, R. Engleman, Jr., and K. J. Fisher, Chem. Instrum. 3, 141 (1971).

Fisher, K. J.

D. W. Steinhaus, R. Engleman, Jr., and K. J. Fisher, Chem. Instrum. 3, 141 (1971).

Gagné, J. M.

J. M. Gagné, S. Gerstenkorn, and J. M. Helbert, C. R. Acad. Sci. (Paris) 259, 3479 (1964).

Gerstenkorn, S.

J. M. Gagné, S. Gerstenkorn, and J. M. Helbert, C. R. Acad. Sci. (Paris) 259, 3479 (1964).

S. Gerstenkorn, P. Luc, Cl. Bauche-Arnoult, and D. Merle, J. Phys. (Paris) 34, 805 (1973).

Giachetti, A.

A. Giachetti, R. W. Stanley, and R. Zalubas, J. Opt. Soc. Am. 60, 474 (1970).

Guelachvili, G.

G. Guelachvili, Thèse 3e. cycle, Paris (1965).

Guyon, F.

F. Guyon, Thèse 3e cycle, Orsay (1972).

F. Guyon, J. Blaise, and J-F Wyart, J. Phys. (Paris) 35, 929 (1974).

Helbert, J. M.

J. M. Gagné, S. Gerstenkorn, and J. M. Helbert, C. R. Acad. Sci. (Paris) 259, 3479 (1964).

Humphreys, C. J.

C. C. Kiess, C. J. Humphreys, and D. D. Laun, J. Res. Nat. Bur. Stand. 37, 57 (1946).

Kiess, C. C.

C. C. Kiess, C. J. Humphreys, and D. D. Laun, J. Res. Nat. Bur. Stand. 37, 57 (1946).

Laun, D. D.

C. C. Kiess, C. J. Humphreys, and D. D. Laun, J. Res. Nat. Bur. Stand. 37, 57 (1946).

Luc, P.

S. Gerstenkorn, P. Luc, Cl. Bauche-Arnoult, and D. Merle, J. Phys. (Paris) 34, 805 (1973).

Merle, D.

S. Gerstenkorn, P. Luc, Cl. Bauche-Arnoult, and D. Merle, J. Phys. (Paris) 34, 805 (1973).

Morillon, C.

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

Ozman, Z. Ben

Z. Ben Ozman, Thèse 3e. cycle, Paris (1966).

Radziemski, Jr., L. J.

L. J. Radziemski, Jr., D. W. Steinhaus, and R. Engleman, Jr., J. Opt. Soc. Am. 61, 1538 (1971).

Rajnak, K.

K. Rajnak (private communication, 1975).

Rao, P. R.

P. R. Rao, Proc. Indian Acad. Sci. Sec. A 58, 353 (1963).

Ross, C. B.

C. B. Ross, J. Opt. Soc. Am. 60, 712 (1970).

Schuurmans, P.

P. Schuurmans, Physica (Utrecht) 11, 419 (1946).

Spector, N.

N. Spector, Phys. Rev. A 8, 3270 (1973).

Stanley, R. W.

A. Giachetti, R. W. Stanley, and R. Zalubas, J. Opt. Soc. Am. 60, 474 (1970).

Steinhaus, D. W.

D. W. Steinhaus, J. Opt. Soc. Am. 50, 672 (1960).

D. W. Steinhaus, R. Engleman, Jr., and K. J. Fisher, Chem. Instrum. 3, 141 (1971).

L. J. Radziemski, Jr., D. W. Steinhaus, and R. Engleman, Jr., J. Opt. Soc. Am. 61, 1538 (1971).

Steudel, A.

J. Blaise and A. Steudel, Z. Phys. 209, 311 (1968).

Van den Berg, G. J.

J. C. Van den Bosch and G. J. Van den Berg, Physica (Utrecht) 15, 329 (1949).

Van den Bosch, J. C.

J. C. Van den Bosch and G. J. Van den Berg, Physica (Utrecht) 15, 329 (1949).

Vergès, J.

J. Vergès, Thèse, Orsay (1969).

J. Vergès (private communication, 1975).

Wyart, J-F

F. Guyon, J. Blaise, and J-F Wyart, J. Phys. (Paris) 35, 929 (1974).

Zalubas, R.

A. Giachetti, R. W. Stanley, and R. Zalubas, J. Opt. Soc. Am. 60, 474 (1970).

Other

C. C. Kiess, C. J. Humphreys, and D. D. Laun, J. Res. Nat. Bur. Stand. 37, 57 (1946).

Unless otherwise specified, the principal quantum numbers of the optical electrons are 5ƒ, 6d, 7s, and 7p.

P. Schuurmans, Physica (Utrecht) 11, 419 (1946).

J. C. Van den Bosch and G. J. Van den Berg, Physica (Utrecht) 15, 329 (1949).

M. Diringer, Ann. Phys. (Leipz.) 10, 89 (1966).

G. Guelachvili, Thèse 3e. cycle, Paris (1965).

Z. Ben Ozman, Thèse 3e. cycle, Paris (1966).

F. Guyon, Thèse 3e cycle, Orsay (1972).

J. Vergès, Thèse, Orsay (1969).

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

J. Blaise and A. Steudel, Z. Phys. 209, 311 (1968).

L. J. Radziemski, Jr., D. W. Steinhaus, and R. Engleman, Jr., J. Opt. Soc. Am. 61, 1538 (1971).

N. Spector, Phys. Rev. A 8, 3270 (1973).

F. Guyon, J. Blaise, and J-F Wyart, J. Phys. (Paris) 35, 929 (1974).

J. Vergès (private communication, 1975).

D. W. Steinhaus, R. Engleman, Jr., and K. J. Fisher, Chem. Instrum. 3, 141 (1971).

D. W. Steinhaus, J. Opt. Soc. Am. 50, 672 (1960).

A. Giachetti, R. W. Stanley, and R. Zalubas, J. Opt. Soc. Am. 60, 474 (1970).

S. Gerstenkorn, P. Luc, Cl. Bauche-Arnoult, and D. Merle, J. Phys. (Paris) 34, 805 (1973).

C. B. Ross, J. Opt. Soc. Am. 60, 712 (1970).

P. R. Rao, Proc. Indian Acad. Sci. Sec. A 58, 353 (1963).

J. M. Gagné, S. Gerstenkorn, and J. M. Helbert, C. R. Acad. Sci. (Paris) 259, 3479 (1964).

R. D. Cowan (private communications, 1972), and NASA Spec. Publ. 236, 151 (1971).

L. Brewer, J. Opt. Soc. Am. 61, 1101 (1971).

K. Rajnak (private communication, 1975).

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