Abstract

The absorption spectrum of Ba ii has been studied for 350 ≤ λ ≤ 1100 Å by the flash pyrolysis technique. 423 transitions have been observed. Several long series have been identified, converging to the 5p5 6s and 5p5 5d limits of Ba iii.

© 1976 Optical Society of America

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References

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  1. R. A. Roig and G. Tondello, “Extensions to the Spectrum of Singly Ionized Barium (Ba ii),” J. Opt. Soc. Am. 65, 829–30 (1975).
    [CrossRef]
  2. B. Peart, J. G. Stevenson, and K. T. Dolder, “Measurements of Cross Sections for the Ionization of Ba+ by Energy Resolved Electrons,” J. Phys. B 6, 146–49 (1973).
    [CrossRef]
  3. J. E. Hansen, “Identification of Autoionization Thresholds in the Cross Section for Electron Ionization of Ba+,” J. Phys. B 7, 1902–5 (1974).
    [CrossRef]
  4. R. A. Roig and G. Tondello, “The Absorption Spectrum of Neutral Boron, B i,” J. Phys. B (in press).
  5. J. P. Connerade, “Absorption Spectrum of Cs i in the Vacuum Ultraviolet,” Astrophys. J. 159, 685–694 (1970).
    [CrossRef]
  6. P. Hellentin (private communication).
  7. J. Reader and G. L. Epstein, “Resonance Lines of Cs ii, Ba iii, and La iv,” J. Opt. Soc. Am. 65, 638–641 (1975).
    [CrossRef]
  8. J. Reader, “Energy Levels of Singly Ionized Cesium (Cs ii),” Phys. Rev. A (in press).

1975 (2)

1974 (1)

J. E. Hansen, “Identification of Autoionization Thresholds in the Cross Section for Electron Ionization of Ba+,” J. Phys. B 7, 1902–5 (1974).
[CrossRef]

1973 (1)

B. Peart, J. G. Stevenson, and K. T. Dolder, “Measurements of Cross Sections for the Ionization of Ba+ by Energy Resolved Electrons,” J. Phys. B 6, 146–49 (1973).
[CrossRef]

1970 (1)

J. P. Connerade, “Absorption Spectrum of Cs i in the Vacuum Ultraviolet,” Astrophys. J. 159, 685–694 (1970).
[CrossRef]

Connerade, J. P.

J. P. Connerade, “Absorption Spectrum of Cs i in the Vacuum Ultraviolet,” Astrophys. J. 159, 685–694 (1970).
[CrossRef]

Dolder, K. T.

B. Peart, J. G. Stevenson, and K. T. Dolder, “Measurements of Cross Sections for the Ionization of Ba+ by Energy Resolved Electrons,” J. Phys. B 6, 146–49 (1973).
[CrossRef]

Epstein, G. L.

Hansen, J. E.

J. E. Hansen, “Identification of Autoionization Thresholds in the Cross Section for Electron Ionization of Ba+,” J. Phys. B 7, 1902–5 (1974).
[CrossRef]

Hellentin, P.

P. Hellentin (private communication).

Peart, B.

B. Peart, J. G. Stevenson, and K. T. Dolder, “Measurements of Cross Sections for the Ionization of Ba+ by Energy Resolved Electrons,” J. Phys. B 6, 146–49 (1973).
[CrossRef]

Reader, J.

J. Reader and G. L. Epstein, “Resonance Lines of Cs ii, Ba iii, and La iv,” J. Opt. Soc. Am. 65, 638–641 (1975).
[CrossRef]

J. Reader, “Energy Levels of Singly Ionized Cesium (Cs ii),” Phys. Rev. A (in press).

Roig, R. A.

R. A. Roig and G. Tondello, “Extensions to the Spectrum of Singly Ionized Barium (Ba ii),” J. Opt. Soc. Am. 65, 829–30 (1975).
[CrossRef]

R. A. Roig and G. Tondello, “The Absorption Spectrum of Neutral Boron, B i,” J. Phys. B (in press).

Stevenson, J. G.

B. Peart, J. G. Stevenson, and K. T. Dolder, “Measurements of Cross Sections for the Ionization of Ba+ by Energy Resolved Electrons,” J. Phys. B 6, 146–49 (1973).
[CrossRef]

Tondello, G.

R. A. Roig and G. Tondello, “Extensions to the Spectrum of Singly Ionized Barium (Ba ii),” J. Opt. Soc. Am. 65, 829–30 (1975).
[CrossRef]

R. A. Roig and G. Tondello, “The Absorption Spectrum of Neutral Boron, B i,” J. Phys. B (in press).

Astrophys. J. (1)

J. P. Connerade, “Absorption Spectrum of Cs i in the Vacuum Ultraviolet,” Astrophys. J. 159, 685–694 (1970).
[CrossRef]

J. Opt. Soc. Am. (2)

J. Phys. B (2)

B. Peart, J. G. Stevenson, and K. T. Dolder, “Measurements of Cross Sections for the Ionization of Ba+ by Energy Resolved Electrons,” J. Phys. B 6, 146–49 (1973).
[CrossRef]

J. E. Hansen, “Identification of Autoionization Thresholds in the Cross Section for Electron Ionization of Ba+,” J. Phys. B 7, 1902–5 (1974).
[CrossRef]

Other (3)

R. A. Roig and G. Tondello, “The Absorption Spectrum of Neutral Boron, B i,” J. Phys. B (in press).

P. Hellentin (private communication).

J. Reader, “Energy Levels of Singly Ionized Cesium (Cs ii),” Phys. Rev. A (in press).

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Figures (1)

FIG. 1
FIG. 1

Absorption spectrum of Ba ii in the vacuum ultraviolet.

Tables (2)

Tables Icon

TABLE I Observed absorption lines of Ba ii.

Tables Icon

TABLE II Observed series.