Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-27T18:35:52.435Z Has data issue: false hasContentIssue false
  • English
  • Français

The emission of positive ions from hot tungsten

Published online by Cambridge University Press:  24 October 2008

P. B. Moon
P. B. Moon
Affiliation:
Sidney Sussex College, Imperial College of Science and Technology, London
Get access Rights & Permissions [Opens in a new window]

Extract

Measurements have been made of the positive ion currents emitted by tungsten at temperatures between 3000°K. and 3200°K. The results are in general accordance with the values calculated on the basis of the Saha equation from the rate of evaporation of neutral atoms, the electron work-function and the ionisation potential of tungsten. The “work-function” associated with the ionic evaporation appears to lie between 10 and 11 electron-volts.

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 28 , Issue 4 , October 1932 , pp. 490 - 496
Copyright
Copyright © Cambridge Philosophical Society 1932

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

* Wahlin, , Phys. Rev., 34 (1929), 164.CrossRefGoogle Scholar

† Smith, , Phys. Rev., 35 (1930), 381.CrossRefGoogle Scholar

* Langmuir, and Kingdon, , Proc. Roy. Soc., 107 (1925), 61.CrossRefGoogle Scholar

* See for instance the tables of many properties of tungsten given by Jones and Langmuir in a series of articles in the General Electric Review, 1927.

† Smith, loc. cit.

‡ Mitra, , Phil. Mag., 5 (1928), 67.CrossRefGoogle Scholar

§ I am grateful to the General Electric Company, Wembley, for the gift of this material.

* Loc. cit.