Abstract

A gas discharge is described which is powered by microwaves of frequency 2400 Mc/sec and which may be run at low power with sufficient stability for direct recording spectroscopy. Discharges in helium have been cooled with liquid helium; the rate of consumption of the coolant is very low and Doppler temperatures of 10°K have been obtained; under these conditions the discharge seems to be brighter than comparable dc discharges. The microwave discharge has also been operated cooled with liquid nitrogen and uncooled at room temperature.

© 1964 Optical Society of America

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References

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  1. H. G. Kuhn and G. W. Series, Proc. Roy. Soc. (London) A202, 127 (1950).
  2. J. Brochard, R. Chabbal, H. Chantrel, and P. Jacquinot, J. Phys. Radium 18, 596 (1957).
    [Crossref]
  3. A. T. Forrester, R. A. Gudmundsen, and P. O. Johnson, J. Opt. Soc. Am. 46, 339 (1956).
    [Crossref]
  4. F. S. Tomkins and M. Fred, J. Opt. Soc. Am. 47, 1087 (1957).
    [Crossref]
  5. H. G. Kuhn and J. M. Vaughan, “Radiation width and resonance broadening in the spectrum of helium,” Proc. Roy. Soc. (London) (to be published).

1957 (2)

J. Brochard, R. Chabbal, H. Chantrel, and P. Jacquinot, J. Phys. Radium 18, 596 (1957).
[Crossref]

F. S. Tomkins and M. Fred, J. Opt. Soc. Am. 47, 1087 (1957).
[Crossref]

1956 (1)

1950 (1)

H. G. Kuhn and G. W. Series, Proc. Roy. Soc. (London) A202, 127 (1950).

Brochard, J.

J. Brochard, R. Chabbal, H. Chantrel, and P. Jacquinot, J. Phys. Radium 18, 596 (1957).
[Crossref]

Chabbal, R.

J. Brochard, R. Chabbal, H. Chantrel, and P. Jacquinot, J. Phys. Radium 18, 596 (1957).
[Crossref]

Chantrel, H.

J. Brochard, R. Chabbal, H. Chantrel, and P. Jacquinot, J. Phys. Radium 18, 596 (1957).
[Crossref]

Forrester, A. T.

Fred, M.

Gudmundsen, R. A.

Jacquinot, P.

J. Brochard, R. Chabbal, H. Chantrel, and P. Jacquinot, J. Phys. Radium 18, 596 (1957).
[Crossref]

Johnson, P. O.

Kuhn, H. G.

H. G. Kuhn and G. W. Series, Proc. Roy. Soc. (London) A202, 127 (1950).

H. G. Kuhn and J. M. Vaughan, “Radiation width and resonance broadening in the spectrum of helium,” Proc. Roy. Soc. (London) (to be published).

Series, G. W.

H. G. Kuhn and G. W. Series, Proc. Roy. Soc. (London) A202, 127 (1950).

Tomkins, F. S.

Vaughan, J. M.

H. G. Kuhn and J. M. Vaughan, “Radiation width and resonance broadening in the spectrum of helium,” Proc. Roy. Soc. (London) (to be published).

J. Opt. Soc. Am. (2)

J. Phys. Radium (1)

J. Brochard, R. Chabbal, H. Chantrel, and P. Jacquinot, J. Phys. Radium 18, 596 (1957).
[Crossref]

Proc. Roy. Soc. (London) (1)

H. G. Kuhn and G. W. Series, Proc. Roy. Soc. (London) A202, 127 (1950).

Other (1)

H. G. Kuhn and J. M. Vaughan, “Radiation width and resonance broadening in the spectrum of helium,” Proc. Roy. Soc. (London) (to be published).

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Figures (1)

Fig. 1
Fig. 1

The discharge assembly. The discharge takes place between the end plates of the “pickup” dipoles P. Microwave power is introduced by the german silver coaxial line C. Additional vents in the top D (for the introduction of liquid helium, etc.) are not shown.