Plume Structure and current-voltage characteristic analysis for a cathodic plasma contactor

Xia Qimeng, Xie Kan, Guo Ning, Jia Yanhui, Liu Xiangyang, Wu Zhiwen, Wang Ningfei

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

In this study, a spherical symmetric theoretical model is chosen to predict the plume structure and the current-voltage of a cathodic plasma contactor. An isothermal model regardless of neutrals is employed to simulate the plume structure in the working condition of high voltage and low current. High electron temperature, placing ionization chamber, large gas flow rate and raising keeper (or anode) current all can improve the current-voltage characteristic. Both models tell that the potential distribution mainly depends on the ratio of potential and temperature while density changes little and the results are approximated to each other. It is calculated that the sheath layer of the vacuum chamber cannot be ignored when the voltage near the chamber is high and density is low based on the classical collisionless sheath model.

Original languageEnglish
Title of host publication53rd AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103438
DOIs
Publication statusPublished - 2015
Event53rd AIAA Aerospace Sciences Meeting, 2015 - Kissimmee, United States
Duration: 5 Jan 20159 Jan 2015

Publication series

Name53rd AIAA Aerospace Sciences Meeting

Conference

Conference53rd AIAA Aerospace Sciences Meeting, 2015
Country/TerritoryUnited States
CityKissimmee
Period5/01/159/01/15

Keywords

  • Cathodic plasma contactor
  • Current-voltage characteristic
  • Plume structure
  • Sheath layer

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