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Gas phase and surface phenomena observed with a seeded plasma

Pinchak, A. C. and Zukoski, E. E. Gas phase and surface phenomena observed with a seeded plasma. . http://resolver.caltech.edu/CaltechAUTHORS:20110208-110426658

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Abstract

This paper describes and discusses some recent experiments conducted with low-temperature seeded plasmas. The plasma was obtained by mixing potassium vapor with arc-heated argon. The experiments indicated two modes of steady, stable current conduction between the electrodes. In the first mode, the effect of gas phase phenomena predominated in fixing the current. Under certain conditions, a transition to a second mode of operation occurred. In this mode, the current was found to be thermionically limited, and was determined solely by electrode surface effects. A comparison between the observed voltage current characteristics and two current conduction theories is presented. Analysis of electrode temperature data indicated that the chief heat transfer mechanism was the penetration of the surface work function barrier as electrons entered or left the surface.


Item Type:Report or Paper (Discussion Paper)
Additional Information:This work was performed under the auspices of the U. S. Air Force Office of Scientific Research under Contract No. AF 49(638)758.
Group:Guggenheim Jet Propulsion Center
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)AF49(638)758
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion Center UNSPECIFIED
Record Number:CaltechAUTHORS:20110208-110426658
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110208-110426658
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:22074
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:09 Feb 2011 16:02
Last Modified:26 Dec 2012 12:54

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