NDLI: Ions sheath thrust and gas parameters in plasma based microthruster

Content Provider	IEEE Xplore Digital Library
Author	Farahat, A.
Copyright Year	2013
Description	Author affiliation: King Fahd Univ. for Pet. & Miner., Dhahran, Saudi Arabia (Farahat, A.)
Abstract	Summary form only given. Millinetwon force produced by plasma interactions with atmospheric pressure inert gas in a micrometer thruster under the effect of an external electric field is investigated using a two dimensional self consistent plasma-fluid model. The resulted thrust can be used to control small spacecrafts at the Lower Earth Orbit (LEO). The thruster's dimensions are 0.4 mm (width) × 0.2 mm (height) and composed of two opposite plates (a cathode and an anode) with a dielectric material in between. The cathode length is 0.4 mm and it exists below the dielectric material of the same length and of a height of 20 μm. The anode of 30 μm length exists at the top of the dielectric. The inert gas directly interacts with both of the anode and the dielectric material with Laminar gas flow considered. Plasma starts at the anode dielectric boundary and an ion sheath starts to develop after about $10^{-8}$ s. The sheath propagates towards the low potential dielectric material and ions are generated by secondary emission accumulate on the dielectric surface extending the anode virtual length. Individual charged species number density in the discharge is calculated by solving species continuity equations with gas energy and momentum equations. The conservation equations for electrons, ions, and metastables are solved concurrently with the Poisson equation. Gas parameters are calculated including temperature, pressure and gas depletions. The effect of changing current and potential difference on the gas parameters is investigated. Electrons' temperature is calculated. The force produced by the ion sheath is calculated for different gas parameters.
Starting Page	1
Ending Page	1
File Size	136982
Page Count	1
File Format	PDF
ISBN	9781467351713
ISSN	07309244
DOI	10.1109/PLASMA.2013.6634971
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Anodes Dielectric materials Ions Plasmas Dielectrics Equations Mathematical model
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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