ELECTRON AND ION SATURATION CURRENTS IN WEAKLY IONIZED GASES AT HIGH PRESSURES (AN EXPANSION OF THE LANGMUIR PROBE THEORY AT HIGH PRESSURES) (in German)
The electron saturation currents measured with the help of fine cylindrical probes at high pressures in the intermediate gas volume of methane-- hydrogen--air flames can be described neither by the Langmuir equations nor the Borgnis probe theory. It was shown that the electrons in the space charge, which at high pressures and low carrier densities completely shield the field of the probe, do not have a constant motion but one dependent on the field and therefore on the position in the space charge layer. It was also shown that in the divergent field of the space charge layer a relaxation of the electron energies occurs which may be neglected at infinitely high pressures. From this viewpoint, a characteristic current-voltage relationship was derived for the electron current at high pressures which permits an exact evaluation of the measurements for determination of the electron densities. The ion saturation currents can be described and evaluated with an equation by Borgnis. (tr-auth)
- Research Organization:
- Universitat, Saarbrucken, Saar, Ger.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-021686
- OSTI ID:
- 4838306
- Journal Information:
- Z. Physik, Vol. Vol: 167; Other Information: Orig. Receipt Date: 31-DEC-62
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
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