Abstract

Some effects in the spectra of individual sparks between copper electrodes electroplated with thin deposits of silver were studied with the aid of a time-resolving spectrograph. The initial phase of the discharge is characterized by short-lived broadened lines of N II and O II, plus an intense continuum. The line spectrum is predominantly that of Ag II with but a few lines of Ag I present. All of the high-level lines of Ag II, and only these lines, are initially asymmetrically broadened and shifted to the red, but return to their normal wavelength positions after 6–9 µsec; while the low-level lines are characterized by self-reversal and associated continuum. The strong similarity to the spectrum of exploding Ag wire indicates that the same mechanism is operative in both. These effects are explained in terms of a Stark effect induced by the fields of neighboring electrons and ions.

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  1. Cady, Cassen and Blitzer, Phys. Rev. 72, 159 (1947).
  2. L. Blitzer and W. M. Cady, J. Opt. Soc. Am. 41, 440 (1951); also references.
  3. W. M. Cady and G. Gordon, J. Opt. Soc. Am. 39, 368 (1949).
  4. J. A. Anderson, Astrophys. J. 51, 37 (1920); J. A. Anderson and S. Smith, Astrophys. J. 64, 295 (1926).
  5. A. G. Shenstone, Phys. Rev. 31, 317 (1928); W. P. Gilbert, Phys. Rev. 47, 847 (1935).
  6. In accordance with the recommendation of the Joint Commission for Spectroscopy [J. Opt. Soc. Am. 43, 410 (1953)] the wave-number unit cm-1 is abbreviated K(=kayser) in Figs. 1 and 3.
  7. G. Glaser, Optik 7, 33 (1950).
  8. O. Th. Hahn and W. Finkelnburg, Z. Physik 122, 37 (1944); H. N. Olsen and W. S. Huxford, Phys. Rev. 87, 922 (1952); Fowler, Atkinson, and Marks, Phys. Rev. 87, 966 (1952).
  9. E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge University Press, Cambridge, England, 1951).

Anderson, J. A.

J. A. Anderson, Astrophys. J. 51, 37 (1920); J. A. Anderson and S. Smith, Astrophys. J. 64, 295 (1926).

Blitzer, L.

L. Blitzer and W. M. Cady, J. Opt. Soc. Am. 41, 440 (1951); also references.

Cady, W. M.

L. Blitzer and W. M. Cady, J. Opt. Soc. Am. 41, 440 (1951); also references.

W. M. Cady and G. Gordon, J. Opt. Soc. Am. 39, 368 (1949).

Condon, E. U.

E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge University Press, Cambridge, England, 1951).

Finkelnburg, W.

O. Th. Hahn and W. Finkelnburg, Z. Physik 122, 37 (1944); H. N. Olsen and W. S. Huxford, Phys. Rev. 87, 922 (1952); Fowler, Atkinson, and Marks, Phys. Rev. 87, 966 (1952).

Glaser, G.

G. Glaser, Optik 7, 33 (1950).

Gordon, G.

W. M. Cady and G. Gordon, J. Opt. Soc. Am. 39, 368 (1949).

Hahn, O. Th.

O. Th. Hahn and W. Finkelnburg, Z. Physik 122, 37 (1944); H. N. Olsen and W. S. Huxford, Phys. Rev. 87, 922 (1952); Fowler, Atkinson, and Marks, Phys. Rev. 87, 966 (1952).

Shenstone, A. G.

A. G. Shenstone, Phys. Rev. 31, 317 (1928); W. P. Gilbert, Phys. Rev. 47, 847 (1935).

Shortley, G. H.

E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge University Press, Cambridge, England, 1951).

Other

Cady, Cassen and Blitzer, Phys. Rev. 72, 159 (1947).

L. Blitzer and W. M. Cady, J. Opt. Soc. Am. 41, 440 (1951); also references.

W. M. Cady and G. Gordon, J. Opt. Soc. Am. 39, 368 (1949).

J. A. Anderson, Astrophys. J. 51, 37 (1920); J. A. Anderson and S. Smith, Astrophys. J. 64, 295 (1926).

A. G. Shenstone, Phys. Rev. 31, 317 (1928); W. P. Gilbert, Phys. Rev. 47, 847 (1935).

In accordance with the recommendation of the Joint Commission for Spectroscopy [J. Opt. Soc. Am. 43, 410 (1953)] the wave-number unit cm-1 is abbreviated K(=kayser) in Figs. 1 and 3.

G. Glaser, Optik 7, 33 (1950).

O. Th. Hahn and W. Finkelnburg, Z. Physik 122, 37 (1944); H. N. Olsen and W. S. Huxford, Phys. Rev. 87, 922 (1952); Fowler, Atkinson, and Marks, Phys. Rev. 87, 966 (1952).

E. U. Condon and G. H. Shortley, The Theory of Atomic Spectra (Cambridge University Press, Cambridge, England, 1951).

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