Abstract

The line 4156 Å is not seen in the beam-foil spectrum of Li+. After a brief review of the Li+ spectrum intended to clarify confusion in the literature, evidence is assembled to support the view that this line has been incorrectly classified as 4 1P∘ → 3 1S. A calculation of Edlén and Löfstrand [ J. Phys. B 3, 1380 ( 1970)] is revised to predict higher n1P∘ levels, and some identifications of lines observed in beam-foil spectroscopy are reported. The experimental estimate of the ionization potential of Li+ done by Herzberg and Moore [ Can. J. Phys. 37, 1293 ( 1959)], which depended on the 4 1P∘ level, is revised to 610 077.8 ± 4.5 cm−1.

© 1984 Optical Society of America

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  1. J. Bromander, S. Hultberg, B. Jelenković, L. Liljeby, and S. Mannervik, "A beam-foil study of lithium," J. Phys. (Paris) 40, Coll. I, 10–13 (1979).
    [CrossRef]
  2. R. Bruch, A. Gaupp, and W. Wittmann, Institut für Atom-und Festkörper-physik, Freie Universität, Berlin, Federal Republic of Germany (personal communication).
  3. J. D. Garcia and J. E. Mack, "Doubly excited states in lithium," Phys. Rev. A 138, 987–991 (1965); erratum Phys. Rev. A 139, B4-B5 (1965).
  4. H. G. Berry, "Multiply-excited states in beam-foil spectroscopy," Phys. Scr. 12, 5–20 (1975).
    [CrossRef]
  5. C. F. Bunge, "Absolute term values for the quartet states of neutral lithium," Phys. Rev. A 23, 2060–2064 (1981).
    [CrossRef]
  6. S. Mannervik and H. Cederquist, "The quartet system of Li I," Phys. Scr. 27, 175–182 (1983).
    [CrossRef]
  7. C. F. Bunge, "Core excited bound states of negative lithium," Phys. Rev. A 22, 1–8 (1980).
    [CrossRef]
  8. S. Mannervik, G. Astner, and M. Kisielinski, "An optical transition in the negative lithium ion," J. Phys. B 13, L441–L444 (1980); R. L. Brooks, J. E. Hardis, H. G. Berry, L. J. Curtis, K. T. Cheng, and W. Ray, "Radiation from the negative lithium ion," Phys. Rev. Lett. 45, 1318–1322 (1980); A. Denis and J. Desesquelles, "Observation of optical emission from beam-foil excited Li," J. Phys. (Paris) Lett. 42, L59–L61 (1981); C. V. K. Baba, M. G. Betigeri, V. M. Datar, M. B. Kurup, R. P. Sharma, and P. Singh, "Excited atomic state of Li" Pramana 18, 295–301 (1982).
    [CrossRef]
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    [CrossRef]
  10. R. W. France, "The absorption spectrum of lithium vapour," Proc. R. Soc. London Ser. A 129, 354–360 (1930).
    [CrossRef]
  11. R. Jáuregui and C. F. Bunge, "Emission spectrum of core-excited lithium doublets," Phys. Rev. A 23, 1618–1623 (1981).
    [CrossRef]
  12. H. Cederquist and S. Mannervik, "On the core-excited doublets of Li I: accurate determination of autoionisation rates," J. Phys. B 15, L807–L812 (1982).
    [CrossRef]
  13. M. Ahmed and L. Lipsky, "Triply excited states of three-electron atomic systems," Phys. Rev. A 12, 1176–1196 (1975).
    [CrossRef]
  14. F. L. Mohler, "Evidence of a spark line in the lithium spectrum," Science 58, 468–469 (1923).
    [CrossRef] [PubMed]
  15. I. Martinson, "Recent progress in the studies of atomic spectra and transition probabilities by beam-foil spectroscopy," Nucl. Inst. Meth. 202, 1–12 (1982).
    [CrossRef]
  16. E. von Angerer, "Versuche zur Erzeugung der Funkenspektrum von Lithium," Z. Phys. 18, 113–119 (1923).
    [CrossRef]
  17. P. D. Foote and F. L. Mohler, The Origin of Spectra (Chemical Catalogue Co., New York, 1922).
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  19. E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge U. Press, Cambridge, 1935), pp. 424–425.
  20. P. Güttinger and W. Pauli, "Zur Hyperfeinstruktur von Li+," Z. Phys. 67, 743–765 (1931).
    [CrossRef]
  21. B. Edlén and A. Ericson, "Vacuum spark spectra in the extreme ultra-violet down to 100 Å," Nature 124, 688–689 (1929); A. Ericson and B. Edlén, "Serienspektren der leichteste Elemente im extremen Ultraviolet," Z. Phys. 59, 656–679 (1930); B. Edlén and A. Ericson, "Hydrogen-like spectra of lithium and beryllium in the extreme ultra-violet," Nature 125, 233–234 (1930); B. Edlén, "Wellenlängen und Termsysteme zu den Atomspektra der Elemente Li, Be, B, C, N, und O," Nova Acta Regiae Soc. Sci. Upps. 9, No. 6 (1934).
    [CrossRef]
  22. H. A. Robinson, "Helium I-like spectra," Phys. Rev. 51, 14–18 (1937).
    [CrossRef]
  23. E. Freytag, "Die Spektren von Li III und Li II," Naturwissen-schaften 46, 314–315 (1959).
    [CrossRef]
  24. J. R. Willison, R. W. Falcone, J. C. Wang, J. F. Young, and S. E. Harris, "Emission spectra of core excited even-parity 2P states of neutral lithium," Phys. Rev. Lett. 44, 1125–1128 (1980).
    [CrossRef]
  25. A. M. Cantù, W. H. Parkinson, G. Tondello, and G. P. Tozzi, "Observations of Li I and Li II absorption spectra in the grazing incidence region," J. Opt. Soc. Am. 67, 1030–1033 (1977).
    [CrossRef]
  26. G. Herzberg, "Ionization potentials and Lamb shifts of the ground states of 4He and 4He," Proc. R. Soc. London Ser. A 248, 309–332 (1958).
    [CrossRef]
  27. G. Herzberg and H. R. Moore, "The spectrum of Li+," Can. J. Phys. 37, 1293–1313 (1959).
    [CrossRef]
  28. G. W. Series and K. Willis, "Note on the Li II spectrum," Proc. Phys. Soc. 71, 274 (1958).
    [CrossRef]
  29. S. Werner, "The spark spectrum of lithium," Nature 118, 154–155 (1926).
    [CrossRef]
  30. C. E. Moore, Atomic Energy Levels, Vol. I, U.S. Nat. Bur. Std. Circ. 467 (1949).
  31. S. Mannervik, "Identification of the 8508 Å line in lithium," Phys. Lett. A 92, 229–230 (1982).
    [CrossRef]
  32. S. Bashkin and J. O. Stoner, Atomic Energy Levels and Grotrian Diagrams. Vol. I. H I-P XV (North Holland, Amsterdam, 1975).
  33. H. Schüler, "Weitere Untersuchungen am ersten Li-Funken-spektrum," Z. Phys. 42, 487–494 (1927).
    [CrossRef]
  34. W. S. Bickel, I. BergströM, R. Buchta, L. Lundin, and I. Martinson, "Mean lives of some doubly-excited levels in Li I," Phys. Rev. 178, 118–122 (1969); N. Andersen, R. Boleu, K. Jensen, and E. Veje, "A beam-foil study of Li I∗∗," Phys. Lett. A 34, 227–228 (1971).
    [CrossRef]
  35. P. Feldman and R. Novick, "Autoionizing states in the alkali atoms with microsecond lifetimes," Phys. Rev. Lett. 11, 278–281 (1963).
    [CrossRef]
  36. H. P. Palenius, Department of Physics, University of Lund, Lund, Sweden, "Additions to the spectra F IV, F V, F VI, F VII and Li II" (unpublished report, 1971).
  37. H. P. Palenius, "Spectrum and term system of single-ionized fluorine, F II," Ark. Fys. 39, 15–64 (1969).
  38. Y. G. Toresson and B. Edlén, "The 1s2s 1S level of Li+," Ark. Fys. 23, 117–118 (1962).
  39. A. L. Stewart, "The properties of the helium atom and the two-electron systems," Adv. Phys. 12, 299–353 (1963).
    [CrossRef]
  40. C. L. Pekeris, "1 1S, 2 1S and 2 3S states of Li+," Phys. Rev. 126, 143–145 (1962).
    [CrossRef]
  41. B. Schiff, H. Lifson, C. L. Pekeris, and P. Rabinowitz, "2 1,3P, 3 1,3P and 4 1,3P states of He and the 2 1P state of Li+" Phys. Rev. A 140, 1104–1121 (1965).
  42. Y. Accad, C. L. Pekeris, and B. Schiff, "S and P states of the helium isoelectronic sequence up to Z = 10," Phys. Rev. A 4, 516–536 (1971).
    [CrossRef]
  43. B. Schiff, Y. Accad and C. L. Pekeris, "Correction to the n 3P1 levels of the helium isoelectronic sequence owing to mixing with the n 1P1 state," Phys. Rev. A 8, 2272–2273 (1973).
    [CrossRef]
  44. B. Schiff, C. L. Pekeris, and Y. Accad, "ƒ values for transitions between the low-lying S and P states of the helium isoelectronic sequence up to Z = 10," Phys. Rev. A 4, 885–893 (1971).
    [CrossRef]
  45. D. Schürmann, "Atomic states of lithium by the beam-foil technique in the spectral range 400–1900 Å," Z. Phys. A 273, 331–338 (1975).
    [CrossRef]
  46. B. Löfstrand, "Spectrum and term system of Be III," Phys. Scr. 8, 57–61 (1973).
    [CrossRef]
  47. B. Edlén and B. Löfstrand, "The term system of C V," J. Phys. B 3, 1380–1388 (1970).
    [CrossRef]
  48. B. Edlén, "Atomic spectra," in Handbuch der Physik, S. Flügge, ed. (Springer-Verlag, Berlin, 1964), Vol. XXVII, p. 130.
  49. H. G. Berry, E. H. Pinnington, and J. L. Subtil, "Energies and mean lives of doubly excited terms in lithium," J. Opt. Soc. Am. 62, 767–771 (1972).
    [CrossRef]
  50. C. L. Pekeris, "Ground state of two-electron atoms," Phys. Rev. 112, 1649–1657(1958).
    [CrossRef]
  51. A. M. Ermolaev, in Progress in Atomic Spectroscopy, W. Hanle and H. Kleinpoppen, eds. (Plenum, New York, 1978), pp. 149–182.
    [CrossRef]

1983 (1)

S. Mannervik and H. Cederquist, "The quartet system of Li I," Phys. Scr. 27, 175–182 (1983).
[CrossRef]

1982 (3)

H. Cederquist and S. Mannervik, "On the core-excited doublets of Li I: accurate determination of autoionisation rates," J. Phys. B 15, L807–L812 (1982).
[CrossRef]

I. Martinson, "Recent progress in the studies of atomic spectra and transition probabilities by beam-foil spectroscopy," Nucl. Inst. Meth. 202, 1–12 (1982).
[CrossRef]

S. Mannervik, "Identification of the 8508 Å line in lithium," Phys. Lett. A 92, 229–230 (1982).
[CrossRef]

1981 (2)

R. Jáuregui and C. F. Bunge, "Emission spectrum of core-excited lithium doublets," Phys. Rev. A 23, 1618–1623 (1981).
[CrossRef]

C. F. Bunge, "Absolute term values for the quartet states of neutral lithium," Phys. Rev. A 23, 2060–2064 (1981).
[CrossRef]

1980 (3)

C. F. Bunge, "Core excited bound states of negative lithium," Phys. Rev. A 22, 1–8 (1980).
[CrossRef]

S. Mannervik, G. Astner, and M. Kisielinski, "An optical transition in the negative lithium ion," J. Phys. B 13, L441–L444 (1980); R. L. Brooks, J. E. Hardis, H. G. Berry, L. J. Curtis, K. T. Cheng, and W. Ray, "Radiation from the negative lithium ion," Phys. Rev. Lett. 45, 1318–1322 (1980); A. Denis and J. Desesquelles, "Observation of optical emission from beam-foil excited Li," J. Phys. (Paris) Lett. 42, L59–L61 (1981); C. V. K. Baba, M. G. Betigeri, V. M. Datar, M. B. Kurup, R. P. Sharma, and P. Singh, "Excited atomic state of Li" Pramana 18, 295–301 (1982).
[CrossRef]

J. R. Willison, R. W. Falcone, J. C. Wang, J. F. Young, and S. E. Harris, "Emission spectra of core excited even-parity 2P states of neutral lithium," Phys. Rev. Lett. 44, 1125–1128 (1980).
[CrossRef]

1979 (1)

J. Bromander, S. Hultberg, B. Jelenković, L. Liljeby, and S. Mannervik, "A beam-foil study of lithium," J. Phys. (Paris) 40, Coll. I, 10–13 (1979).
[CrossRef]

1978 (1)

A. M. Ermolaev, in Progress in Atomic Spectroscopy, W. Hanle and H. Kleinpoppen, eds. (Plenum, New York, 1978), pp. 149–182.
[CrossRef]

1977 (1)

1975 (3)

H. G. Berry, "Multiply-excited states in beam-foil spectroscopy," Phys. Scr. 12, 5–20 (1975).
[CrossRef]

M. Ahmed and L. Lipsky, "Triply excited states of three-electron atomic systems," Phys. Rev. A 12, 1176–1196 (1975).
[CrossRef]

D. Schürmann, "Atomic states of lithium by the beam-foil technique in the spectral range 400–1900 Å," Z. Phys. A 273, 331–338 (1975).
[CrossRef]

1973 (2)

B. Löfstrand, "Spectrum and term system of Be III," Phys. Scr. 8, 57–61 (1973).
[CrossRef]

B. Schiff, Y. Accad and C. L. Pekeris, "Correction to the n 3P1 levels of the helium isoelectronic sequence owing to mixing with the n 1P1 state," Phys. Rev. A 8, 2272–2273 (1973).
[CrossRef]

1972 (1)

1971 (2)

B. Schiff, C. L. Pekeris, and Y. Accad, "ƒ values for transitions between the low-lying S and P states of the helium isoelectronic sequence up to Z = 10," Phys. Rev. A 4, 885–893 (1971).
[CrossRef]

Y. Accad, C. L. Pekeris, and B. Schiff, "S and P states of the helium isoelectronic sequence up to Z = 10," Phys. Rev. A 4, 516–536 (1971).
[CrossRef]

1970 (1)

B. Edlén and B. Löfstrand, "The term system of C V," J. Phys. B 3, 1380–1388 (1970).
[CrossRef]

1969 (2)

W. S. Bickel, I. BergströM, R. Buchta, L. Lundin, and I. Martinson, "Mean lives of some doubly-excited levels in Li I," Phys. Rev. 178, 118–122 (1969); N. Andersen, R. Boleu, K. Jensen, and E. Veje, "A beam-foil study of Li I∗∗," Phys. Lett. A 34, 227–228 (1971).
[CrossRef]

H. P. Palenius, "Spectrum and term system of single-ionized fluorine, F II," Ark. Fys. 39, 15–64 (1969).

1965 (3)

B. Schiff, H. Lifson, C. L. Pekeris, and P. Rabinowitz, "2 1,3P, 3 1,3P and 4 1,3P states of He and the 2 1P state of Li+" Phys. Rev. A 140, 1104–1121 (1965).

J. D. Garcia and J. E. Mack, "Doubly excited states in lithium," Phys. Rev. A 138, 987–991 (1965); erratum Phys. Rev. A 139, B4-B5 (1965).

J. D. Garcia and J. E. Mack, "Energy level and line tables for one-electron atomic spectra," J. Opt. Soc. Am. 55, 654–685 (1965).
[CrossRef]

1964 (1)

B. Edlén, "Atomic spectra," in Handbuch der Physik, S. Flügge, ed. (Springer-Verlag, Berlin, 1964), Vol. XXVII, p. 130.

1963 (2)

A. L. Stewart, "The properties of the helium atom and the two-electron systems," Adv. Phys. 12, 299–353 (1963).
[CrossRef]

P. Feldman and R. Novick, "Autoionizing states in the alkali atoms with microsecond lifetimes," Phys. Rev. Lett. 11, 278–281 (1963).
[CrossRef]

1962 (2)

Y. G. Toresson and B. Edlén, "The 1s2s 1S level of Li+," Ark. Fys. 23, 117–118 (1962).

C. L. Pekeris, "1 1S, 2 1S and 2 3S states of Li+," Phys. Rev. 126, 143–145 (1962).
[CrossRef]

1959 (2)

G. Herzberg and H. R. Moore, "The spectrum of Li+," Can. J. Phys. 37, 1293–1313 (1959).
[CrossRef]

E. Freytag, "Die Spektren von Li III und Li II," Naturwissen-schaften 46, 314–315 (1959).
[CrossRef]

1958 (3)

G. W. Series and K. Willis, "Note on the Li II spectrum," Proc. Phys. Soc. 71, 274 (1958).
[CrossRef]

G. Herzberg, "Ionization potentials and Lamb shifts of the ground states of 4He and 4He," Proc. R. Soc. London Ser. A 248, 309–332 (1958).
[CrossRef]

C. L. Pekeris, "Ground state of two-electron atoms," Phys. Rev. 112, 1649–1657(1958).
[CrossRef]

1949 (1)

C. E. Moore, Atomic Energy Levels, Vol. I, U.S. Nat. Bur. Std. Circ. 467 (1949).

1937 (1)

H. A. Robinson, "Helium I-like spectra," Phys. Rev. 51, 14–18 (1937).
[CrossRef]

1931 (1)

P. Güttinger and W. Pauli, "Zur Hyperfeinstruktur von Li+," Z. Phys. 67, 743–765 (1931).
[CrossRef]

1930 (1)

R. W. France, "The absorption spectrum of lithium vapour," Proc. R. Soc. London Ser. A 129, 354–360 (1930).
[CrossRef]

1929 (1)

B. Edlén and A. Ericson, "Vacuum spark spectra in the extreme ultra-violet down to 100 Å," Nature 124, 688–689 (1929); A. Ericson and B. Edlén, "Serienspektren der leichteste Elemente im extremen Ultraviolet," Z. Phys. 59, 656–679 (1930); B. Edlén and A. Ericson, "Hydrogen-like spectra of lithium and beryllium in the extreme ultra-violet," Nature 125, 233–234 (1930); B. Edlén, "Wellenlängen und Termsysteme zu den Atomspektra der Elemente Li, Be, B, C, N, und O," Nova Acta Regiae Soc. Sci. Upps. 9, No. 6 (1934).
[CrossRef]

1927 (1)

H. Schüler, "Weitere Untersuchungen am ersten Li-Funken-spektrum," Z. Phys. 42, 487–494 (1927).
[CrossRef]

1926 (1)

S. Werner, "The spark spectrum of lithium," Nature 118, 154–155 (1926).
[CrossRef]

1923 (2)

F. L. Mohler, "Evidence of a spark line in the lithium spectrum," Science 58, 468–469 (1923).
[CrossRef] [PubMed]

E. von Angerer, "Versuche zur Erzeugung der Funkenspektrum von Lithium," Z. Phys. 18, 113–119 (1923).
[CrossRef]

Accad, Y.

B. Schiff, Y. Accad and C. L. Pekeris, "Correction to the n 3P1 levels of the helium isoelectronic sequence owing to mixing with the n 1P1 state," Phys. Rev. A 8, 2272–2273 (1973).
[CrossRef]

B. Schiff, C. L. Pekeris, and Y. Accad, "ƒ values for transitions between the low-lying S and P states of the helium isoelectronic sequence up to Z = 10," Phys. Rev. A 4, 885–893 (1971).
[CrossRef]

Y. Accad, C. L. Pekeris, and B. Schiff, "S and P states of the helium isoelectronic sequence up to Z = 10," Phys. Rev. A 4, 516–536 (1971).
[CrossRef]

Ahmed, M.

M. Ahmed and L. Lipsky, "Triply excited states of three-electron atomic systems," Phys. Rev. A 12, 1176–1196 (1975).
[CrossRef]

Angerer, E. von

E. von Angerer, "Versuche zur Erzeugung der Funkenspektrum von Lithium," Z. Phys. 18, 113–119 (1923).
[CrossRef]

Astner, G.

S. Mannervik, G. Astner, and M. Kisielinski, "An optical transition in the negative lithium ion," J. Phys. B 13, L441–L444 (1980); R. L. Brooks, J. E. Hardis, H. G. Berry, L. J. Curtis, K. T. Cheng, and W. Ray, "Radiation from the negative lithium ion," Phys. Rev. Lett. 45, 1318–1322 (1980); A. Denis and J. Desesquelles, "Observation of optical emission from beam-foil excited Li," J. Phys. (Paris) Lett. 42, L59–L61 (1981); C. V. K. Baba, M. G. Betigeri, V. M. Datar, M. B. Kurup, R. P. Sharma, and P. Singh, "Excited atomic state of Li" Pramana 18, 295–301 (1982).
[CrossRef]

Bashkin, S.

S. Bashkin and J. O. Stoner, Atomic Energy Levels and Grotrian Diagrams. Vol. I. H I-P XV (North Holland, Amsterdam, 1975).

BergströM, I.

W. S. Bickel, I. BergströM, R. Buchta, L. Lundin, and I. Martinson, "Mean lives of some doubly-excited levels in Li I," Phys. Rev. 178, 118–122 (1969); N. Andersen, R. Boleu, K. Jensen, and E. Veje, "A beam-foil study of Li I∗∗," Phys. Lett. A 34, 227–228 (1971).
[CrossRef]

Berry, H. G.

Bickel, W. S.

W. S. Bickel, I. BergströM, R. Buchta, L. Lundin, and I. Martinson, "Mean lives of some doubly-excited levels in Li I," Phys. Rev. 178, 118–122 (1969); N. Andersen, R. Boleu, K. Jensen, and E. Veje, "A beam-foil study of Li I∗∗," Phys. Lett. A 34, 227–228 (1971).
[CrossRef]

Bromander, J.

J. Bromander, S. Hultberg, B. Jelenković, L. Liljeby, and S. Mannervik, "A beam-foil study of lithium," J. Phys. (Paris) 40, Coll. I, 10–13 (1979).
[CrossRef]

Bruch, R.

R. Bruch, A. Gaupp, and W. Wittmann, Institut für Atom-und Festkörper-physik, Freie Universität, Berlin, Federal Republic of Germany (personal communication).

Buchta, R.

W. S. Bickel, I. BergströM, R. Buchta, L. Lundin, and I. Martinson, "Mean lives of some doubly-excited levels in Li I," Phys. Rev. 178, 118–122 (1969); N. Andersen, R. Boleu, K. Jensen, and E. Veje, "A beam-foil study of Li I∗∗," Phys. Lett. A 34, 227–228 (1971).
[CrossRef]

Bunge, C. F.

C. F. Bunge, "Absolute term values for the quartet states of neutral lithium," Phys. Rev. A 23, 2060–2064 (1981).
[CrossRef]

R. Jáuregui and C. F. Bunge, "Emission spectrum of core-excited lithium doublets," Phys. Rev. A 23, 1618–1623 (1981).
[CrossRef]

C. F. Bunge, "Core excited bound states of negative lithium," Phys. Rev. A 22, 1–8 (1980).
[CrossRef]

Cantù, A. M.

Cederquist, H.

S. Mannervik and H. Cederquist, "The quartet system of Li I," Phys. Scr. 27, 175–182 (1983).
[CrossRef]

H. Cederquist and S. Mannervik, "On the core-excited doublets of Li I: accurate determination of autoionisation rates," J. Phys. B 15, L807–L812 (1982).
[CrossRef]

Condon, E. U.

E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge U. Press, Cambridge, 1935), pp. 424–425.

Edlén, B.

B. Edlén and B. Löfstrand, "The term system of C V," J. Phys. B 3, 1380–1388 (1970).
[CrossRef]

B. Edlén, "Atomic spectra," in Handbuch der Physik, S. Flügge, ed. (Springer-Verlag, Berlin, 1964), Vol. XXVII, p. 130.

Y. G. Toresson and B. Edlén, "The 1s2s 1S level of Li+," Ark. Fys. 23, 117–118 (1962).

B. Edlén and A. Ericson, "Vacuum spark spectra in the extreme ultra-violet down to 100 Å," Nature 124, 688–689 (1929); A. Ericson and B. Edlén, "Serienspektren der leichteste Elemente im extremen Ultraviolet," Z. Phys. 59, 656–679 (1930); B. Edlén and A. Ericson, "Hydrogen-like spectra of lithium and beryllium in the extreme ultra-violet," Nature 125, 233–234 (1930); B. Edlén, "Wellenlängen und Termsysteme zu den Atomspektra der Elemente Li, Be, B, C, N, und O," Nova Acta Regiae Soc. Sci. Upps. 9, No. 6 (1934).
[CrossRef]

Ericson, A.

B. Edlén and A. Ericson, "Vacuum spark spectra in the extreme ultra-violet down to 100 Å," Nature 124, 688–689 (1929); A. Ericson and B. Edlén, "Serienspektren der leichteste Elemente im extremen Ultraviolet," Z. Phys. 59, 656–679 (1930); B. Edlén and A. Ericson, "Hydrogen-like spectra of lithium and beryllium in the extreme ultra-violet," Nature 125, 233–234 (1930); B. Edlén, "Wellenlängen und Termsysteme zu den Atomspektra der Elemente Li, Be, B, C, N, und O," Nova Acta Regiae Soc. Sci. Upps. 9, No. 6 (1934).
[CrossRef]

Ermolaev, A. M.

A. M. Ermolaev, in Progress in Atomic Spectroscopy, W. Hanle and H. Kleinpoppen, eds. (Plenum, New York, 1978), pp. 149–182.
[CrossRef]

Falcone, R. W.

J. R. Willison, R. W. Falcone, J. C. Wang, J. F. Young, and S. E. Harris, "Emission spectra of core excited even-parity 2P states of neutral lithium," Phys. Rev. Lett. 44, 1125–1128 (1980).
[CrossRef]

Feldman, P.

P. Feldman and R. Novick, "Autoionizing states in the alkali atoms with microsecond lifetimes," Phys. Rev. Lett. 11, 278–281 (1963).
[CrossRef]

Foote, P. D.

P. D. Foote and F. L. Mohler, The Origin of Spectra (Chemical Catalogue Co., New York, 1922).

France, R. W.

R. W. France, "The absorption spectrum of lithium vapour," Proc. R. Soc. London Ser. A 129, 354–360 (1930).
[CrossRef]

Freytag, E.

E. Freytag, "Die Spektren von Li III und Li II," Naturwissen-schaften 46, 314–315 (1959).
[CrossRef]

Garcia, J. D.

J. D. Garcia and J. E. Mack, "Energy level and line tables for one-electron atomic spectra," J. Opt. Soc. Am. 55, 654–685 (1965).
[CrossRef]

J. D. Garcia and J. E. Mack, "Doubly excited states in lithium," Phys. Rev. A 138, 987–991 (1965); erratum Phys. Rev. A 139, B4-B5 (1965).

Gaupp, A.

R. Bruch, A. Gaupp, and W. Wittmann, Institut für Atom-und Festkörper-physik, Freie Universität, Berlin, Federal Republic of Germany (personal communication).

Güttinger, P.

P. Güttinger and W. Pauli, "Zur Hyperfeinstruktur von Li+," Z. Phys. 67, 743–765 (1931).
[CrossRef]

Harris, S. E.

J. R. Willison, R. W. Falcone, J. C. Wang, J. F. Young, and S. E. Harris, "Emission spectra of core excited even-parity 2P states of neutral lithium," Phys. Rev. Lett. 44, 1125–1128 (1980).
[CrossRef]

Herzberg, G.

G. Herzberg and H. R. Moore, "The spectrum of Li+," Can. J. Phys. 37, 1293–1313 (1959).
[CrossRef]

G. Herzberg, "Ionization potentials and Lamb shifts of the ground states of 4He and 4He," Proc. R. Soc. London Ser. A 248, 309–332 (1958).
[CrossRef]

Hultberg, S.

J. Bromander, S. Hultberg, B. Jelenković, L. Liljeby, and S. Mannervik, "A beam-foil study of lithium," J. Phys. (Paris) 40, Coll. I, 10–13 (1979).
[CrossRef]

Jáuregui, R.

R. Jáuregui and C. F. Bunge, "Emission spectrum of core-excited lithium doublets," Phys. Rev. A 23, 1618–1623 (1981).
[CrossRef]

Jelenkovic, B.

J. Bromander, S. Hultberg, B. Jelenković, L. Liljeby, and S. Mannervik, "A beam-foil study of lithium," J. Phys. (Paris) 40, Coll. I, 10–13 (1979).
[CrossRef]

Kisielinski, M.

S. Mannervik, G. Astner, and M. Kisielinski, "An optical transition in the negative lithium ion," J. Phys. B 13, L441–L444 (1980); R. L. Brooks, J. E. Hardis, H. G. Berry, L. J. Curtis, K. T. Cheng, and W. Ray, "Radiation from the negative lithium ion," Phys. Rev. Lett. 45, 1318–1322 (1980); A. Denis and J. Desesquelles, "Observation of optical emission from beam-foil excited Li," J. Phys. (Paris) Lett. 42, L59–L61 (1981); C. V. K. Baba, M. G. Betigeri, V. M. Datar, M. B. Kurup, R. P. Sharma, and P. Singh, "Excited atomic state of Li" Pramana 18, 295–301 (1982).
[CrossRef]

Lifson, H.

B. Schiff, H. Lifson, C. L. Pekeris, and P. Rabinowitz, "2 1,3P, 3 1,3P and 4 1,3P states of He and the 2 1P state of Li+" Phys. Rev. A 140, 1104–1121 (1965).

Liljeby, L.

J. Bromander, S. Hultberg, B. Jelenković, L. Liljeby, and S. Mannervik, "A beam-foil study of lithium," J. Phys. (Paris) 40, Coll. I, 10–13 (1979).
[CrossRef]

Lipsky, L.

M. Ahmed and L. Lipsky, "Triply excited states of three-electron atomic systems," Phys. Rev. A 12, 1176–1196 (1975).
[CrossRef]

Löfstrand, B.

B. Löfstrand, "Spectrum and term system of Be III," Phys. Scr. 8, 57–61 (1973).
[CrossRef]

B. Edlén and B. Löfstrand, "The term system of C V," J. Phys. B 3, 1380–1388 (1970).
[CrossRef]

Lundin, L.

W. S. Bickel, I. BergströM, R. Buchta, L. Lundin, and I. Martinson, "Mean lives of some doubly-excited levels in Li I," Phys. Rev. 178, 118–122 (1969); N. Andersen, R. Boleu, K. Jensen, and E. Veje, "A beam-foil study of Li I∗∗," Phys. Lett. A 34, 227–228 (1971).
[CrossRef]

Mack, J. E.

J. D. Garcia and J. E. Mack, "Doubly excited states in lithium," Phys. Rev. A 138, 987–991 (1965); erratum Phys. Rev. A 139, B4-B5 (1965).

J. D. Garcia and J. E. Mack, "Energy level and line tables for one-electron atomic spectra," J. Opt. Soc. Am. 55, 654–685 (1965).
[CrossRef]

Mannervik, S.

S. Mannervik and H. Cederquist, "The quartet system of Li I," Phys. Scr. 27, 175–182 (1983).
[CrossRef]

H. Cederquist and S. Mannervik, "On the core-excited doublets of Li I: accurate determination of autoionisation rates," J. Phys. B 15, L807–L812 (1982).
[CrossRef]

S. Mannervik, "Identification of the 8508 Å line in lithium," Phys. Lett. A 92, 229–230 (1982).
[CrossRef]

S. Mannervik, G. Astner, and M. Kisielinski, "An optical transition in the negative lithium ion," J. Phys. B 13, L441–L444 (1980); R. L. Brooks, J. E. Hardis, H. G. Berry, L. J. Curtis, K. T. Cheng, and W. Ray, "Radiation from the negative lithium ion," Phys. Rev. Lett. 45, 1318–1322 (1980); A. Denis and J. Desesquelles, "Observation of optical emission from beam-foil excited Li," J. Phys. (Paris) Lett. 42, L59–L61 (1981); C. V. K. Baba, M. G. Betigeri, V. M. Datar, M. B. Kurup, R. P. Sharma, and P. Singh, "Excited atomic state of Li" Pramana 18, 295–301 (1982).
[CrossRef]

J. Bromander, S. Hultberg, B. Jelenković, L. Liljeby, and S. Mannervik, "A beam-foil study of lithium," J. Phys. (Paris) 40, Coll. I, 10–13 (1979).
[CrossRef]

Martinson, I.

I. Martinson, "Recent progress in the studies of atomic spectra and transition probabilities by beam-foil spectroscopy," Nucl. Inst. Meth. 202, 1–12 (1982).
[CrossRef]

W. S. Bickel, I. BergströM, R. Buchta, L. Lundin, and I. Martinson, "Mean lives of some doubly-excited levels in Li I," Phys. Rev. 178, 118–122 (1969); N. Andersen, R. Boleu, K. Jensen, and E. Veje, "A beam-foil study of Li I∗∗," Phys. Lett. A 34, 227–228 (1971).
[CrossRef]

Mohler, F. L.

F. L. Mohler, "Evidence of a spark line in the lithium spectrum," Science 58, 468–469 (1923).
[CrossRef] [PubMed]

P. D. Foote and F. L. Mohler, The Origin of Spectra (Chemical Catalogue Co., New York, 1922).

Moore, C. E.

C. E. Moore, Atomic Energy Levels, Vol. I, U.S. Nat. Bur. Std. Circ. 467 (1949).

Moore, H. R.

G. Herzberg and H. R. Moore, "The spectrum of Li+," Can. J. Phys. 37, 1293–1313 (1959).
[CrossRef]

Novick, R.

P. Feldman and R. Novick, "Autoionizing states in the alkali atoms with microsecond lifetimes," Phys. Rev. Lett. 11, 278–281 (1963).
[CrossRef]

Palenius, H. P.

H. P. Palenius, "Spectrum and term system of single-ionized fluorine, F II," Ark. Fys. 39, 15–64 (1969).

H. P. Palenius, Department of Physics, University of Lund, Lund, Sweden, "Additions to the spectra F IV, F V, F VI, F VII and Li II" (unpublished report, 1971).

Parkinson, W. H.

Pauli, W.

P. Güttinger and W. Pauli, "Zur Hyperfeinstruktur von Li+," Z. Phys. 67, 743–765 (1931).
[CrossRef]

Pekeris, C. L.

B. Schiff, Y. Accad and C. L. Pekeris, "Correction to the n 3P1 levels of the helium isoelectronic sequence owing to mixing with the n 1P1 state," Phys. Rev. A 8, 2272–2273 (1973).
[CrossRef]

B. Schiff, C. L. Pekeris, and Y. Accad, "ƒ values for transitions between the low-lying S and P states of the helium isoelectronic sequence up to Z = 10," Phys. Rev. A 4, 885–893 (1971).
[CrossRef]

Y. Accad, C. L. Pekeris, and B. Schiff, "S and P states of the helium isoelectronic sequence up to Z = 10," Phys. Rev. A 4, 516–536 (1971).
[CrossRef]

B. Schiff, H. Lifson, C. L. Pekeris, and P. Rabinowitz, "2 1,3P, 3 1,3P and 4 1,3P states of He and the 2 1P state of Li+" Phys. Rev. A 140, 1104–1121 (1965).

C. L. Pekeris, "1 1S, 2 1S and 2 3S states of Li+," Phys. Rev. 126, 143–145 (1962).
[CrossRef]

C. L. Pekeris, "Ground state of two-electron atoms," Phys. Rev. 112, 1649–1657(1958).
[CrossRef]

Pinnington, E. H.

Rabinowitz, P.

B. Schiff, H. Lifson, C. L. Pekeris, and P. Rabinowitz, "2 1,3P, 3 1,3P and 4 1,3P states of He and the 2 1P state of Li+" Phys. Rev. A 140, 1104–1121 (1965).

Robinson, H. A.

H. A. Robinson, "Helium I-like spectra," Phys. Rev. 51, 14–18 (1937).
[CrossRef]

Schiff, B.

B. Schiff, Y. Accad and C. L. Pekeris, "Correction to the n 3P1 levels of the helium isoelectronic sequence owing to mixing with the n 1P1 state," Phys. Rev. A 8, 2272–2273 (1973).
[CrossRef]

Y. Accad, C. L. Pekeris, and B. Schiff, "S and P states of the helium isoelectronic sequence up to Z = 10," Phys. Rev. A 4, 516–536 (1971).
[CrossRef]

B. Schiff, C. L. Pekeris, and Y. Accad, "ƒ values for transitions between the low-lying S and P states of the helium isoelectronic sequence up to Z = 10," Phys. Rev. A 4, 885–893 (1971).
[CrossRef]

B. Schiff, H. Lifson, C. L. Pekeris, and P. Rabinowitz, "2 1,3P, 3 1,3P and 4 1,3P states of He and the 2 1P state of Li+" Phys. Rev. A 140, 1104–1121 (1965).

Schüler, H.

H. Schüler, "Weitere Untersuchungen am ersten Li-Funken-spektrum," Z. Phys. 42, 487–494 (1927).
[CrossRef]

Schürmann, D.

D. Schürmann, "Atomic states of lithium by the beam-foil technique in the spectral range 400–1900 Å," Z. Phys. A 273, 331–338 (1975).
[CrossRef]

Series, G. W.

G. W. Series and K. Willis, "Note on the Li II spectrum," Proc. Phys. Soc. 71, 274 (1958).
[CrossRef]

Shortley, G. H.

E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge U. Press, Cambridge, 1935), pp. 424–425.

Stewart, A. L.

A. L. Stewart, "The properties of the helium atom and the two-electron systems," Adv. Phys. 12, 299–353 (1963).
[CrossRef]

Stoner, J. O.

S. Bashkin and J. O. Stoner, Atomic Energy Levels and Grotrian Diagrams. Vol. I. H I-P XV (North Holland, Amsterdam, 1975).

Subtil, J. L.

Tondello, G.

Toresson, Y. G.

Y. G. Toresson and B. Edlén, "The 1s2s 1S level of Li+," Ark. Fys. 23, 117–118 (1962).

Tozzi, G. P.

Wang, J. C.

J. R. Willison, R. W. Falcone, J. C. Wang, J. F. Young, and S. E. Harris, "Emission spectra of core excited even-parity 2P states of neutral lithium," Phys. Rev. Lett. 44, 1125–1128 (1980).
[CrossRef]

Werner, S.

S. Werner, "The spark spectrum of lithium," Nature 118, 154–155 (1926).
[CrossRef]

S. Werner, Studier over Spektroskopiske Lyskilder til Frem-bringelse af Gnistspektre med Resultater for Lithiums Gnist-spektrum, (Aschehoug, Copenhagen, Denmark, 1927).

Willis, K.

G. W. Series and K. Willis, "Note on the Li II spectrum," Proc. Phys. Soc. 71, 274 (1958).
[CrossRef]

Willison, J. R.

J. R. Willison, R. W. Falcone, J. C. Wang, J. F. Young, and S. E. Harris, "Emission spectra of core excited even-parity 2P states of neutral lithium," Phys. Rev. Lett. 44, 1125–1128 (1980).
[CrossRef]

Wittmann, W.

R. Bruch, A. Gaupp, and W. Wittmann, Institut für Atom-und Festkörper-physik, Freie Universität, Berlin, Federal Republic of Germany (personal communication).

Young, J. F.

J. R. Willison, R. W. Falcone, J. C. Wang, J. F. Young, and S. E. Harris, "Emission spectra of core excited even-parity 2P states of neutral lithium," Phys. Rev. Lett. 44, 1125–1128 (1980).
[CrossRef]

Adv. Phys. (1)

A. L. Stewart, "The properties of the helium atom and the two-electron systems," Adv. Phys. 12, 299–353 (1963).
[CrossRef]

Ark. Fys. (2)

H. P. Palenius, "Spectrum and term system of single-ionized fluorine, F II," Ark. Fys. 39, 15–64 (1969).

Y. G. Toresson and B. Edlén, "The 1s2s 1S level of Li+," Ark. Fys. 23, 117–118 (1962).

Can. J. Phys. (1)

G. Herzberg and H. R. Moore, "The spectrum of Li+," Can. J. Phys. 37, 1293–1313 (1959).
[CrossRef]

J. Opt. Soc. Am. (3)

J. Phys. (Paris) 40, Coll. (1)

J. Bromander, S. Hultberg, B. Jelenković, L. Liljeby, and S. Mannervik, "A beam-foil study of lithium," J. Phys. (Paris) 40, Coll. I, 10–13 (1979).
[CrossRef]

J. Phys. B (3)

S. Mannervik, G. Astner, and M. Kisielinski, "An optical transition in the negative lithium ion," J. Phys. B 13, L441–L444 (1980); R. L. Brooks, J. E. Hardis, H. G. Berry, L. J. Curtis, K. T. Cheng, and W. Ray, "Radiation from the negative lithium ion," Phys. Rev. Lett. 45, 1318–1322 (1980); A. Denis and J. Desesquelles, "Observation of optical emission from beam-foil excited Li," J. Phys. (Paris) Lett. 42, L59–L61 (1981); C. V. K. Baba, M. G. Betigeri, V. M. Datar, M. B. Kurup, R. P. Sharma, and P. Singh, "Excited atomic state of Li" Pramana 18, 295–301 (1982).
[CrossRef]

H. Cederquist and S. Mannervik, "On the core-excited doublets of Li I: accurate determination of autoionisation rates," J. Phys. B 15, L807–L812 (1982).
[CrossRef]

B. Edlén and B. Löfstrand, "The term system of C V," J. Phys. B 3, 1380–1388 (1970).
[CrossRef]

Nature (2)

B. Edlén and A. Ericson, "Vacuum spark spectra in the extreme ultra-violet down to 100 Å," Nature 124, 688–689 (1929); A. Ericson and B. Edlén, "Serienspektren der leichteste Elemente im extremen Ultraviolet," Z. Phys. 59, 656–679 (1930); B. Edlén and A. Ericson, "Hydrogen-like spectra of lithium and beryllium in the extreme ultra-violet," Nature 125, 233–234 (1930); B. Edlén, "Wellenlängen und Termsysteme zu den Atomspektra der Elemente Li, Be, B, C, N, und O," Nova Acta Regiae Soc. Sci. Upps. 9, No. 6 (1934).
[CrossRef]

S. Werner, "The spark spectrum of lithium," Nature 118, 154–155 (1926).
[CrossRef]

Naturwissen-schaften (1)

E. Freytag, "Die Spektren von Li III und Li II," Naturwissen-schaften 46, 314–315 (1959).
[CrossRef]

Nucl. Inst. Meth. (1)

I. Martinson, "Recent progress in the studies of atomic spectra and transition probabilities by beam-foil spectroscopy," Nucl. Inst. Meth. 202, 1–12 (1982).
[CrossRef]

Phys. Lett. A (1)

S. Mannervik, "Identification of the 8508 Å line in lithium," Phys. Lett. A 92, 229–230 (1982).
[CrossRef]

Phys. Rev. (4)

W. S. Bickel, I. BergströM, R. Buchta, L. Lundin, and I. Martinson, "Mean lives of some doubly-excited levels in Li I," Phys. Rev. 178, 118–122 (1969); N. Andersen, R. Boleu, K. Jensen, and E. Veje, "A beam-foil study of Li I∗∗," Phys. Lett. A 34, 227–228 (1971).
[CrossRef]

H. A. Robinson, "Helium I-like spectra," Phys. Rev. 51, 14–18 (1937).
[CrossRef]

C. L. Pekeris, "Ground state of two-electron atoms," Phys. Rev. 112, 1649–1657(1958).
[CrossRef]

C. L. Pekeris, "1 1S, 2 1S and 2 3S states of Li+," Phys. Rev. 126, 143–145 (1962).
[CrossRef]

Phys. Rev. A (9)

B. Schiff, H. Lifson, C. L. Pekeris, and P. Rabinowitz, "2 1,3P, 3 1,3P and 4 1,3P states of He and the 2 1P state of Li+" Phys. Rev. A 140, 1104–1121 (1965).

Y. Accad, C. L. Pekeris, and B. Schiff, "S and P states of the helium isoelectronic sequence up to Z = 10," Phys. Rev. A 4, 516–536 (1971).
[CrossRef]

B. Schiff, Y. Accad and C. L. Pekeris, "Correction to the n 3P1 levels of the helium isoelectronic sequence owing to mixing with the n 1P1 state," Phys. Rev. A 8, 2272–2273 (1973).
[CrossRef]

B. Schiff, C. L. Pekeris, and Y. Accad, "ƒ values for transitions between the low-lying S and P states of the helium isoelectronic sequence up to Z = 10," Phys. Rev. A 4, 885–893 (1971).
[CrossRef]

R. Jáuregui and C. F. Bunge, "Emission spectrum of core-excited lithium doublets," Phys. Rev. A 23, 1618–1623 (1981).
[CrossRef]

M. Ahmed and L. Lipsky, "Triply excited states of three-electron atomic systems," Phys. Rev. A 12, 1176–1196 (1975).
[CrossRef]

C. F. Bunge, "Core excited bound states of negative lithium," Phys. Rev. A 22, 1–8 (1980).
[CrossRef]

C. F. Bunge, "Absolute term values for the quartet states of neutral lithium," Phys. Rev. A 23, 2060–2064 (1981).
[CrossRef]

J. D. Garcia and J. E. Mack, "Doubly excited states in lithium," Phys. Rev. A 138, 987–991 (1965); erratum Phys. Rev. A 139, B4-B5 (1965).

Phys. Rev. Lett. (2)

J. R. Willison, R. W. Falcone, J. C. Wang, J. F. Young, and S. E. Harris, "Emission spectra of core excited even-parity 2P states of neutral lithium," Phys. Rev. Lett. 44, 1125–1128 (1980).
[CrossRef]

P. Feldman and R. Novick, "Autoionizing states in the alkali atoms with microsecond lifetimes," Phys. Rev. Lett. 11, 278–281 (1963).
[CrossRef]

Phys. Scr. (3)

H. G. Berry, "Multiply-excited states in beam-foil spectroscopy," Phys. Scr. 12, 5–20 (1975).
[CrossRef]

S. Mannervik and H. Cederquist, "The quartet system of Li I," Phys. Scr. 27, 175–182 (1983).
[CrossRef]

B. Löfstrand, "Spectrum and term system of Be III," Phys. Scr. 8, 57–61 (1973).
[CrossRef]

Proc. Phys. Soc. (1)

G. W. Series and K. Willis, "Note on the Li II spectrum," Proc. Phys. Soc. 71, 274 (1958).
[CrossRef]

Proc. R. Soc. London Ser. A (2)

G. Herzberg, "Ionization potentials and Lamb shifts of the ground states of 4He and 4He," Proc. R. Soc. London Ser. A 248, 309–332 (1958).
[CrossRef]

R. W. France, "The absorption spectrum of lithium vapour," Proc. R. Soc. London Ser. A 129, 354–360 (1930).
[CrossRef]

Science (1)

F. L. Mohler, "Evidence of a spark line in the lithium spectrum," Science 58, 468–469 (1923).
[CrossRef] [PubMed]

Z. Phys. (3)

E. von Angerer, "Versuche zur Erzeugung der Funkenspektrum von Lithium," Z. Phys. 18, 113–119 (1923).
[CrossRef]

P. Güttinger and W. Pauli, "Zur Hyperfeinstruktur von Li+," Z. Phys. 67, 743–765 (1931).
[CrossRef]

H. Schüler, "Weitere Untersuchungen am ersten Li-Funken-spektrum," Z. Phys. 42, 487–494 (1927).
[CrossRef]

Z. Phys. A (1)

D. Schürmann, "Atomic states of lithium by the beam-foil technique in the spectral range 400–1900 Å," Z. Phys. A 273, 331–338 (1975).
[CrossRef]

Other (9)

A. M. Ermolaev, in Progress in Atomic Spectroscopy, W. Hanle and H. Kleinpoppen, eds. (Plenum, New York, 1978), pp. 149–182.
[CrossRef]

B. Edlén, "Atomic spectra," in Handbuch der Physik, S. Flügge, ed. (Springer-Verlag, Berlin, 1964), Vol. XXVII, p. 130.

C. E. Moore, Atomic Energy Levels, Vol. I, U.S. Nat. Bur. Std. Circ. 467 (1949).

H. P. Palenius, Department of Physics, University of Lund, Lund, Sweden, "Additions to the spectra F IV, F V, F VI, F VII and Li II" (unpublished report, 1971).

S. Bashkin and J. O. Stoner, Atomic Energy Levels and Grotrian Diagrams. Vol. I. H I-P XV (North Holland, Amsterdam, 1975).

P. D. Foote and F. L. Mohler, The Origin of Spectra (Chemical Catalogue Co., New York, 1922).

S. Werner, Studier over Spektroskopiske Lyskilder til Frem-bringelse af Gnistspektre med Resultater for Lithiums Gnist-spektrum, (Aschehoug, Copenhagen, Denmark, 1927).

E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge U. Press, Cambridge, 1935), pp. 424–425.

R. Bruch, A. Gaupp, and W. Wittmann, Institut für Atom-und Festkörper-physik, Freie Universität, Berlin, Federal Republic of Germany (personal communication).

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Figures (1)

Fig. 1
Fig. 1

Excited levels of 1Li+ established by accurate loops from classical spectroscopy.

Tables (1)

Tables Icon

Table 1 Li+: n1P∘ Energy Levels

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