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Der Einfluß der Elektronenverteilungsfunktion auf Mikrowellenemission und Hochfrequenzleitfähigkeit eines schwach ionisierten Entladungsplasmas
Author(s) -
Heymann Peter
Publication year - 1968
Publication title -
beiträge aus der plasmaphysik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0005-8025
DOI - 10.1002/ctpp.19680080402
Subject(s) - collision frequency , atomic physics , neon , physics , boltzmann equation , distribution function , electron , argon , conductivity , momentum (technical analysis) , microwave , radiation , chemistry , quantum mechanics , finance , economics
We have investigated the influence of the distribution function on the microwave emission and the rf‐conductivity. In the positive column of low current discharges through neon and argon the electrons are Druyvesteyn‐like distributed, owing to the absence of Coulomb‐interactions. In this case the radiation temperature is a function of the dc‐field in the positive column, of the collision frequency for momentum transfer and the radiation frequency. With only elastic and excitation terms in the Boltzmann equation we have computed the distribution functions. These results are used to calculate the radiation temperature by means of Bekefis formula. Agreement is obtained between the experimental and theoretical results. The rf‐conductivity does not depend very sensitively on changes in the distribution function; nevertheless the high values of the electron collision frequency obtained from the real part of the rf‐conductivity could be explained only with a Druyvesteyn‐like distribution.