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On the measurement of the critical potentials of gases

Published online by Cambridge University Press:  24 October 2008

E. G. Dymond
E. G. Dymond
Affiliation:
St John's College
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Extract

In all methods of measuring excitation and ionisation potentials which are in common use the current-voltage characteristic curves of the apparatus are plotted. In the absence of gas these curves are smooth, but on the admission of gas at a suitable pressure sharp upward bends occur at definite voltages, which are interpreted as the critical potentials of the gas. In a variation by Franck and Hertz, the so-called inelastic impact method, these bends are downward, the critical points being represented by maxima.

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 22 , Issue 3 , 20 September 1924 , pp. 405 - 408
Copyright
Copyright © Cambridge Philosophical Society 1924

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References

* Franck, and Hertz, , Verh. d. D. Phys. Ges., 16, p. 457 (1914)Google Scholar.

* Hertz, , Proc. Amst. Acad., 25, p. 90 (1922)Google Scholar; Blackett, , Proc. Camb. Phil. Soc., 22, p. 56 (1924)CrossRefGoogle Scholar.