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 Ui and Uii. The wave-number accuracy is about 0.003 cm−1. With this list and new Zeeman structure, isotope-shift, and 233U hyperfine-structure spectrograms, we have found 500 new Ui levels. We now know 1240 even levels between 7020 and 42000 cm−1 and 360 odd levels up to 38000 cm−1. All levels expected to lie below 10000 cm−1 have been found. Levels of five odd configurations (f3ds2, f3d 2s, f4sp, f3ds8s, f4dp) and seven even configurations (f4s2, f2d2s2, f3s 2p, f3dsp, f4ds, f3d 2p, f3ds8p) are now known.

© 1976 Optical Society of America

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References

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  1. C. C. Kiess, C. J. Humphreys, and D. D. Laun, J. Res. Nat. Bur. Stand. 37, 57 (1946).
    [CrossRef]
  2. Unless otherwise specified, the principal quantum numbers of the optical electrons are 5f, 6d, 7s, and 7p.
  3. P. Schuurmans, Physica (Utrecht) 11, 419 (1946).
    [CrossRef]
  4. J. C. Van den Bosch and G. J. Van den Berg, Physica (Utrecht) 15, 329 (1949).
    [CrossRef]
  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).
    [CrossRef]
  11. J. Blaise and A. Steudel, Z. Phys. 209, 311 (1968).
    [CrossRef]
  12. L. J. Radziemski, D. W. Steinhaus, and R. Engleman, J. Opt. Soc. Am. 61, 1538 (1971).
    [CrossRef]
  13. N. Spector, Phys. Rev. A 8, 3270 (1973).
    [CrossRef]
  14. F. Guyon, J. Blaise, and J-F. Wyart, J. Phys. (Paris) 35, 929 (1974).
    [CrossRef]
  15. J. Vergès (private communication, 1975).
  16. D. W. Steinhaus, R. Engleman, and K. J. Fisher, Chem. Instrum. 3, 141 (1971).
    [CrossRef]
  17. D. W. Steinhaus, J. Opt. Soc. Am. 50, 672 (1960).
    [CrossRef]
  18. A. Giachetti, R. W. Stanley, and R. Zalubas, J. Opt. Soc. Am. 60, 474 (1970).
    [CrossRef]
  19. S. Gerstenkorn, P. Luc, Cl. Bauche-Arnoult, and D. Merle, J. Phys. (Paris) 34, 805 (1973).
    [CrossRef]
  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).
    [CrossRef]
  25. K. Rajnak (private communication, 1975).

1974 (1)

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

1973 (2)

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

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

1971 (3)

1970 (3)

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

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

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

1968 (1)

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

1966 (1)

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

1964 (1)

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

1963 (1)

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

1960 (1)

1949 (1)

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

1946 (2)

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

P. Schuurmans, Physica (Utrecht) 11, 419 (1946).
[CrossRef]

Bauche-Arnoult, Cl.

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

Ben Ozman, Z.

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

Blaise, J.

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

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

Brewer, L.

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, R.

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

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

Fisher, K. J.

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

Gagné, J. M.

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

Gerstenkorn, S.

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

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

Giachetti, A.

Guelachvili, G.

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

Guyon, F.

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

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

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).
[CrossRef]

Kiess, C. C.

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

Laun, D. D.

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

Luc, P.

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

Merle, D.

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

Morillon, C.

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

Radziemski, L. J.

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).
[CrossRef]

Spector, N.

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

Stanley, R. W.

Steinhaus, D. W.

Steudel, A.

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

Van den Berg, G. J.

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

Van den Bosch, J. C.

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

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).
[CrossRef]

Zalubas, R.

Ann. Phys. (Leipz.) (1)

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

C. R. Acad. Sci. (Paris) (1)

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

Chem. Instrum. (1)

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

J. Opt. Soc. Am. (5)

J. Phys. (Paris) (2)

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

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

J. Res. Nat. Bur. Stand. (1)

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

Phys. Rev. A (1)

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

Physica (Utrecht) (2)

P. Schuurmans, Physica (Utrecht) 11, 419 (1946).
[CrossRef]

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

Proc. Indian Acad. Sci. Sec. A (1)

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

Spectrochim. Acta Part B (1)

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

Z. Phys. (1)

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

Other (8)

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

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).

J. Vergès (private communication, 1975).

K. Rajnak (private communication, 1975).

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

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Figures (1)

FIG. 1
FIG. 1

Positions of the lowest levels of known Ui configurations, and the density of observed levels. Principal quantum numbers for the f, d, s, and p electrons are 5, 6, 7, and 7, respectively, unless otherwise specified.

Tables (4)

Tables Icon

TABLE I Properties of the uranium line list.

Tables Icon

TABLE II Odd energy levels of Ui.

Tables Icon

TABLE III Even energy levels of Ui.

Tables Icon

TABLE IV Lowest levels of known configurations of Ui.