Abstract

Methods for producing and exciting electrodeless discharge lamps of a variety of metallic vapors are discussed. The design of a resonant cavity for use with a 2450 megacycle microtherm unit in exciting the lamps is given. These lamps are long-lived and simple in construction and because of the great intensity of the principal lines, they are adaptable to photochemical uses. Satisfactory lamps were produced of lead indium, gallium, antimony, bismuth, mercury, cadmium, thallium, zinc, calcium, and barium.

© 1952 Optical Society of America

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References

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  1. W. F. Meggers and F. O. Westfall, J. Research Natl. Bur. Standards 44, 447 (1950).
    [Crossref]
  2. W. F. Meggers, J. Opt. Soc. Am. 38, 7 (1948).
    [Crossref] [PubMed]
  3. E. Jacobsen and G. R. Harrison, J. Opt. Soc. Am. 39, 12 (1949).

1950 (1)

W. F. Meggers and F. O. Westfall, J. Research Natl. Bur. Standards 44, 447 (1950).
[Crossref]

1949 (1)

E. Jacobsen and G. R. Harrison, J. Opt. Soc. Am. 39, 12 (1949).

1948 (1)

Harrison, G. R.

E. Jacobsen and G. R. Harrison, J. Opt. Soc. Am. 39, 12 (1949).

Jacobsen, E.

E. Jacobsen and G. R. Harrison, J. Opt. Soc. Am. 39, 12 (1949).

Meggers, W. F.

W. F. Meggers and F. O. Westfall, J. Research Natl. Bur. Standards 44, 447 (1950).
[Crossref]

W. F. Meggers, J. Opt. Soc. Am. 38, 7 (1948).
[Crossref] [PubMed]

Westfall, F. O.

W. F. Meggers and F. O. Westfall, J. Research Natl. Bur. Standards 44, 447 (1950).
[Crossref]

J. Opt. Soc. Am. (2)

W. F. Meggers, J. Opt. Soc. Am. 38, 7 (1948).
[Crossref] [PubMed]

E. Jacobsen and G. R. Harrison, J. Opt. Soc. Am. 39, 12 (1949).

J. Research Natl. Bur. Standards (1)

W. F. Meggers and F. O. Westfall, J. Research Natl. Bur. Standards 44, 447 (1950).
[Crossref]

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Figures (3)

F. 1
F. 1

The resonant cavity (one-quarter size). S, air cooling tube; C, quarter wave choke; T, discharge tube; B, viewing port.

F. 2
F. 2

The filling system and microtherm unit.

F. 3
F. 3

Spectra of various electrodeless discharge lamps in the region of 2200A to 4200A.