TITLE

Enhancement of electric force by ion-neutral collisions

AUTHOR(S)
Makrinich, G.; Fruchtman, A.
PUB. DATE
November 2009
SOURCE
Applied Physics Letters;11/2/2009, Vol. 95 Issue 18, p181504
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The measured force exerted on an ion flow by an electric field is found to be larger than the electric force that can be exerted if the ions are collisionless. In addition, the increase of the gas pressure is found to result in an increase of the electric force despite a simultaneous decrease of the deposited electric power. Employing a simple model, we argue that these experimental findings result from the electric force being felt by the ions for a longer time, their residence time in the acceleration region is increased due to their slowing-down collisions with neutrals.
ACCESSION #
45036548

 

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