| Numéro |
J. Phys. Colloques
Volume 40, Numéro C7, Juillet 1979
XIVe Conférence Internationale sur les Phénomènes d'Ionisation dans les Gaz / XIVth International Conference on Phenomena in Ionized Gases
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| Page(s) | C7-821 - C7-822 | |
| DOI | https://doi.org/10.1051/jphyscol:19797396 | |
XIVe Conférence Internationale sur les Phénomènes d'Ionisation dans les Gaz / XIVth International Conference on Phenomena in Ionized Gases
J. Phys. Colloques 40 (1979) C7-821-C7-822
DOI: 10.1051/jphyscol:19797396
Fachbereich Physik, Universität Essen-Gesamthochschule, 43 Essen, Fed. Rep. of Germany.
J. Phys. Colloques 40 (1979) C7-821-C7-822
DOI: 10.1051/jphyscol:19797396
POSITIVE IN EXTRACTION BY AN ANODIC ORIFICE PROBE
H.G. Lergon et K.G. MüllerFachbereich Physik, Universität Essen-Gesamthochschule, 43 Essen, Fed. Rep. of Germany.
Abstract
From a nonthermal plasma ions are extracted by an orifice probe being anodic, i.e. positive with respect to plasma potential. In front of the orifice a secondary plasma is observed providing an intense source for ion extraction. The extraction mechanism can be explained by a potential of the secondary plasma above probe potential. The thermal energies of the ions from the secondary plasma are of the order of 1/10 eV.