Abstract

The atomic spectra of Li i and Li ii have been observed in the region 215–160 Å. The flash-pyrolysis technique has been used to produce the atomic vapor. A toroidal focusing mirror has been used which allows the background continuum from the BRV source to be photographed with a single shot. Thirteen lines of the principal series of singly ionized lithium and the continuous absorption at the limit of the series have been observed. Absorption lines from inner-shell excitation of neutral lithium have also been observed and tentatively identified.

© 1977 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. L. S. Nelson, “Intense rapid heating with flash discharge lamps,” Science 136, 296–303 (1962).
    [CrossRef] [PubMed]
  2. G. Tondello, “The absorption spectrum of S i in the vacuum ultraviolet,” Astrophys. J. 172, 771–783 (1972).
    [CrossRef]
  3. G. Tondello, “Absorption spectrum of Cu i in the vacuum ultraviolet,” J. Opt. Soc. Am. 63, 346–352 (1973).
    [CrossRef]
  4. R. A. Roig, “The photoionization spectrum of neutral aluminum All,” J. Phys. B 8, 2939–2947 (1975).
    [CrossRef]
  5. R. A. Roig and G. Tondello, “The absorption spectrum of neutral boron, B i,” J. Phys. B 9, 2373–2378 (1976).
    [CrossRef]
  6. R. A. Roig and G. Tondello, “Extensions to the spectrum of singly ionized barium (Ba ii),” J. Opt. Soc. Am. 65, 829–830 (1975).
    [CrossRef]
  7. R. A. Roig, “Absorption spectrum of Ba ii in the vacuum ultraviolet,” J. Opt. Soc. Am. 66, 1400–1405 (1976).
    [CrossRef]
  8. R. A. Roig, “The photoionization spectra of Al i, B i and Ba ii,” Ph.D. thesis, Physics Dept., Harvard University (1975) (unpublished).
  9. D. L. Ederer, T. Lucatorto, and R. P. Madden, “Autoionization spectra of lithium,” Phys. Rev. Lett. 25, 1537–1540 (1970).
    [CrossRef]
  10. T. B. Lucatorto and T. J. McIlrath, “Efficient laser production of a Na+ ground-state plasma column: Absorption spectroscopy and photoionization measurement of Na+,” Phys. Rev. Lett. 37, 428–431 (1976).
    [CrossRef]
  11. G. Balloffet, J. Romand, and B. Vodar, “An emission source of continuous spectrum extending from the visible to the extreme ultraviolet,” C. R. Acad. Sci. Paris 252, 4139–4151 (1961).
  12. T. Lucatorto and T. J. McIlrath (private communication).
  13. W. H. Parkinson, C. Skinner, and P. Smith (private communication).
  14. A. M. Cantù and G. Tondello, “Improvements to a continuum source and a focussing technique for the 80–500 Å range,” Appl. Opt. 14, 996–998 (1975).
    [CrossRef]
  15. R. L. Kelly, “Atomic Emission Lines Below 2000 angstroms–Hydrogen through Argon,” NRL Report 6648 (1968) (U. S. Government Printing Office, Washington, D.C.).
  16. T. H. Newsom, “Wavelength standards for use with a BRV source,” Appl. Opt. 13, 2712–2715 (1974).
    [CrossRef] [PubMed]
  17. J. W. Cooper, M. J. Conneely, K. Smith, and S. Ormonde, “Resonant structure of lithium between the 23S and 21P thresholds,” Phys. Rev. Lett. 25, 1540–1543 (1970).
    [CrossRef]
  18. J. P. Buchet, M. C. Buchet-Poulizac, and H. G. Berry, “Classifications of some transitions in doubly excited Li i and Li ii,” Phys. Rev. A 7, 922–924 (1973).
    [CrossRef]

1976 (3)

R. A. Roig and G. Tondello, “The absorption spectrum of neutral boron, B i,” J. Phys. B 9, 2373–2378 (1976).
[CrossRef]

T. B. Lucatorto and T. J. McIlrath, “Efficient laser production of a Na+ ground-state plasma column: Absorption spectroscopy and photoionization measurement of Na+,” Phys. Rev. Lett. 37, 428–431 (1976).
[CrossRef]

R. A. Roig, “Absorption spectrum of Ba ii in the vacuum ultraviolet,” J. Opt. Soc. Am. 66, 1400–1405 (1976).
[CrossRef]

1975 (3)

1974 (1)

1973 (2)

J. P. Buchet, M. C. Buchet-Poulizac, and H. G. Berry, “Classifications of some transitions in doubly excited Li i and Li ii,” Phys. Rev. A 7, 922–924 (1973).
[CrossRef]

G. Tondello, “Absorption spectrum of Cu i in the vacuum ultraviolet,” J. Opt. Soc. Am. 63, 346–352 (1973).
[CrossRef]

1972 (1)

G. Tondello, “The absorption spectrum of S i in the vacuum ultraviolet,” Astrophys. J. 172, 771–783 (1972).
[CrossRef]

1970 (2)

J. W. Cooper, M. J. Conneely, K. Smith, and S. Ormonde, “Resonant structure of lithium between the 23S and 21P thresholds,” Phys. Rev. Lett. 25, 1540–1543 (1970).
[CrossRef]

D. L. Ederer, T. Lucatorto, and R. P. Madden, “Autoionization spectra of lithium,” Phys. Rev. Lett. 25, 1537–1540 (1970).
[CrossRef]

1962 (1)

L. S. Nelson, “Intense rapid heating with flash discharge lamps,” Science 136, 296–303 (1962).
[CrossRef] [PubMed]

1961 (1)

G. Balloffet, J. Romand, and B. Vodar, “An emission source of continuous spectrum extending from the visible to the extreme ultraviolet,” C. R. Acad. Sci. Paris 252, 4139–4151 (1961).

Balloffet, G.

G. Balloffet, J. Romand, and B. Vodar, “An emission source of continuous spectrum extending from the visible to the extreme ultraviolet,” C. R. Acad. Sci. Paris 252, 4139–4151 (1961).

Berry, H. G.

J. P. Buchet, M. C. Buchet-Poulizac, and H. G. Berry, “Classifications of some transitions in doubly excited Li i and Li ii,” Phys. Rev. A 7, 922–924 (1973).
[CrossRef]

Buchet, J. P.

J. P. Buchet, M. C. Buchet-Poulizac, and H. G. Berry, “Classifications of some transitions in doubly excited Li i and Li ii,” Phys. Rev. A 7, 922–924 (1973).
[CrossRef]

Buchet-Poulizac, M. C.

J. P. Buchet, M. C. Buchet-Poulizac, and H. G. Berry, “Classifications of some transitions in doubly excited Li i and Li ii,” Phys. Rev. A 7, 922–924 (1973).
[CrossRef]

Cantù, A. M.

Conneely, M. J.

J. W. Cooper, M. J. Conneely, K. Smith, and S. Ormonde, “Resonant structure of lithium between the 23S and 21P thresholds,” Phys. Rev. Lett. 25, 1540–1543 (1970).
[CrossRef]

Cooper, J. W.

J. W. Cooper, M. J. Conneely, K. Smith, and S. Ormonde, “Resonant structure of lithium between the 23S and 21P thresholds,” Phys. Rev. Lett. 25, 1540–1543 (1970).
[CrossRef]

Ederer, D. L.

D. L. Ederer, T. Lucatorto, and R. P. Madden, “Autoionization spectra of lithium,” Phys. Rev. Lett. 25, 1537–1540 (1970).
[CrossRef]

Kelly, R. L.

R. L. Kelly, “Atomic Emission Lines Below 2000 angstroms–Hydrogen through Argon,” NRL Report 6648 (1968) (U. S. Government Printing Office, Washington, D.C.).

Lucatorto, T.

D. L. Ederer, T. Lucatorto, and R. P. Madden, “Autoionization spectra of lithium,” Phys. Rev. Lett. 25, 1537–1540 (1970).
[CrossRef]

T. Lucatorto and T. J. McIlrath (private communication).

Lucatorto, T. B.

T. B. Lucatorto and T. J. McIlrath, “Efficient laser production of a Na+ ground-state plasma column: Absorption spectroscopy and photoionization measurement of Na+,” Phys. Rev. Lett. 37, 428–431 (1976).
[CrossRef]

Madden, R. P.

D. L. Ederer, T. Lucatorto, and R. P. Madden, “Autoionization spectra of lithium,” Phys. Rev. Lett. 25, 1537–1540 (1970).
[CrossRef]

McIlrath, T. J.

T. B. Lucatorto and T. J. McIlrath, “Efficient laser production of a Na+ ground-state plasma column: Absorption spectroscopy and photoionization measurement of Na+,” Phys. Rev. Lett. 37, 428–431 (1976).
[CrossRef]

T. Lucatorto and T. J. McIlrath (private communication).

Nelson, L. S.

L. S. Nelson, “Intense rapid heating with flash discharge lamps,” Science 136, 296–303 (1962).
[CrossRef] [PubMed]

Newsom, T. H.

Ormonde, S.

J. W. Cooper, M. J. Conneely, K. Smith, and S. Ormonde, “Resonant structure of lithium between the 23S and 21P thresholds,” Phys. Rev. Lett. 25, 1540–1543 (1970).
[CrossRef]

Parkinson, W. H.

W. H. Parkinson, C. Skinner, and P. Smith (private communication).

Roig, R. A.

R. A. Roig and G. Tondello, “The absorption spectrum of neutral boron, B i,” J. Phys. B 9, 2373–2378 (1976).
[CrossRef]

R. A. Roig, “Absorption spectrum of Ba ii in the vacuum ultraviolet,” J. Opt. Soc. Am. 66, 1400–1405 (1976).
[CrossRef]

R. A. Roig and G. Tondello, “Extensions to the spectrum of singly ionized barium (Ba ii),” J. Opt. Soc. Am. 65, 829–830 (1975).
[CrossRef]

R. A. Roig, “The photoionization spectrum of neutral aluminum All,” J. Phys. B 8, 2939–2947 (1975).
[CrossRef]

R. A. Roig, “The photoionization spectra of Al i, B i and Ba ii,” Ph.D. thesis, Physics Dept., Harvard University (1975) (unpublished).

Romand, J.

G. Balloffet, J. Romand, and B. Vodar, “An emission source of continuous spectrum extending from the visible to the extreme ultraviolet,” C. R. Acad. Sci. Paris 252, 4139–4151 (1961).

Skinner, C.

W. H. Parkinson, C. Skinner, and P. Smith (private communication).

Smith, K.

J. W. Cooper, M. J. Conneely, K. Smith, and S. Ormonde, “Resonant structure of lithium between the 23S and 21P thresholds,” Phys. Rev. Lett. 25, 1540–1543 (1970).
[CrossRef]

Smith, P.

W. H. Parkinson, C. Skinner, and P. Smith (private communication).

Tondello, G.

Vodar, B.

G. Balloffet, J. Romand, and B. Vodar, “An emission source of continuous spectrum extending from the visible to the extreme ultraviolet,” C. R. Acad. Sci. Paris 252, 4139–4151 (1961).

Appl. Opt. (2)

Astrophys. J. (1)

G. Tondello, “The absorption spectrum of S i in the vacuum ultraviolet,” Astrophys. J. 172, 771–783 (1972).
[CrossRef]

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

G. Balloffet, J. Romand, and B. Vodar, “An emission source of continuous spectrum extending from the visible to the extreme ultraviolet,” C. R. Acad. Sci. Paris 252, 4139–4151 (1961).

J. Opt. Soc. Am. (3)

J. Phys. B (2)

R. A. Roig, “The photoionization spectrum of neutral aluminum All,” J. Phys. B 8, 2939–2947 (1975).
[CrossRef]

R. A. Roig and G. Tondello, “The absorption spectrum of neutral boron, B i,” J. Phys. B 9, 2373–2378 (1976).
[CrossRef]

Phys. Rev. A (1)

J. P. Buchet, M. C. Buchet-Poulizac, and H. G. Berry, “Classifications of some transitions in doubly excited Li i and Li ii,” Phys. Rev. A 7, 922–924 (1973).
[CrossRef]

Phys. Rev. Lett. (3)

J. W. Cooper, M. J. Conneely, K. Smith, and S. Ormonde, “Resonant structure of lithium between the 23S and 21P thresholds,” Phys. Rev. Lett. 25, 1540–1543 (1970).
[CrossRef]

D. L. Ederer, T. Lucatorto, and R. P. Madden, “Autoionization spectra of lithium,” Phys. Rev. Lett. 25, 1537–1540 (1970).
[CrossRef]

T. B. Lucatorto and T. J. McIlrath, “Efficient laser production of a Na+ ground-state plasma column: Absorption spectroscopy and photoionization measurement of Na+,” Phys. Rev. Lett. 37, 428–431 (1976).
[CrossRef]

Science (1)

L. S. Nelson, “Intense rapid heating with flash discharge lamps,” Science 136, 296–303 (1962).
[CrossRef] [PubMed]

Other (4)

R. A. Roig, “The photoionization spectra of Al i, B i and Ba ii,” Ph.D. thesis, Physics Dept., Harvard University (1975) (unpublished).

T. Lucatorto and T. J. McIlrath (private communication).

W. H. Parkinson, C. Skinner, and P. Smith (private communication).

R. L. Kelly, “Atomic Emission Lines Below 2000 angstroms–Hydrogen through Argon,” NRL Report 6648 (1968) (U. S. Government Printing Office, Washington, D.C.).

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (2)

FIG. 1
FIG. 1

Schematic of the experiment showing the BRV source, the flash-pyrolysis tube, the focusing mirror M, and the grazing-incidence spectrograph, C1 and C2 are the condensers, T1 and T2 the trigger generation units, and D the variable delay device. S is the entrance slit of the spectrograph, G is the grating.

FIG. 2
FIG. 2

Microphotogram of the spectral region 160–215 Å showing the principal features of the recorded spectra. In the lower part are shown the Li ii and the Li i identified series. On the bottom are the remaining Lii unidentified lines. Also indicated in the trace are some impurity lines appearing in emission in the BRV source, and on the left-hand side the dashed line shows the lowering of continuum due to the absorption at the limit of the Li ii resonance series.

Tables (2)

Tables Icon

TABLE I Lines of Li ii 1s2 1S–1snp 1P0.

Tables Icon

TABLE II Lines of Li i (from ground level 1s22s 2S except where stated).