Role of Positive Ions in High‐Voltage Breakdown in Vacuum

Autor:	R. W. Cloud, H. C. Bourne, J. G. Trump
Rok vydání:	1955
Předmět:	Hydrogen Analytical chemistry General Physics and Astronomy chemistry.chemical_element Copper Ion Anode Xenon chemistry Physics::Plasma Physics Ionization Electrode Atomic physics Helium
Zdroj:	Journal of Applied Physics. 26:596-599
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1722047
Popis:	Measurements were made of the electron emission from targets of magnesium, aluminum, steel, copper, gold, and lead when bombarded by ions from hydrogen, helium, nitrogen, xenon, and mercury. The ions, whose energy was varied over the range from 10 to 140 kilovolts, were produced by ionization of the residual gas in the anode electrode and emerged through a small opening into an essentially uniform accelerating field. An initial rapid rise of electron emission with ion energy was followed in all cases by a slow linear increase. The emission ratio varied from 2 to 20 and was maximum for nitrogen ions on steel. The effect of extractive gradient at the bombarded metal surface was slight and no simple dependence on the nature of the ion or of the bombarded metal was observed. The significance of these measurements on the electronion interaction theory of high‐voltage breakdown in vacuum is discussed.
Databáze:	OpenAIRE
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