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Title: Maximizing Ion Current by Space Charge Neutralization using Negative Ions and Dust Particles

Abstract

Ion current extracted from an ion source (ion thruster) can be increased above the Child-Langmuir limit if the ion space charge is neutralized. Similarly, the limiting kinetic energy density of the plasma flow in a Hall thruster might be exceeded if additional mechanisms of space charge neutralization are introduced. Space charge neutralization with high-mass negative ions or negatively charged dust particles seems, in principle, promising for the development of a high current or high energy density source of positive light ions. Several space charge neutralization schemes that employ heavy negatively charged particles are considered. It is shown that the proposed neutralization schemes can lead, at best, only to a moderate but nonetheless possibly important increase of the ion current in the ion thruster and the thrust density in the Hall thruster.

Authors:
; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab., Princeton, NJ (US)
Sponsoring Org.:
USDOE Office of Science (SC) (US)
OSTI Identifier:
836621
Report Number(s):
PPPL-4045
TRN: US0500755
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 25 Jan 2005
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANIONS; CHARGED PARTICLES; DUSTS; ENERGY DENSITY; ION SOURCES; ION THRUSTERS; KINETIC ENERGY; LIGHT IONS; PLASMA; SPACE CHARGE; THRUSTERS; DUSTY PLASMAS

Citation Formats

A. Smirnov, Y. Raitses, and N.J. Fisch. Maximizing Ion Current by Space Charge Neutralization using Negative Ions and Dust Particles. United States: N. p., 2005. Web. doi:10.2172/836621.
A. Smirnov, Y. Raitses, & N.J. Fisch. Maximizing Ion Current by Space Charge Neutralization using Negative Ions and Dust Particles. United States. doi:10.2172/836621.
A. Smirnov, Y. Raitses, and N.J. Fisch. Tue . "Maximizing Ion Current by Space Charge Neutralization using Negative Ions and Dust Particles". United States. doi:10.2172/836621. https://www.osti.gov/servlets/purl/836621.
@article{osti_836621,
title = {Maximizing Ion Current by Space Charge Neutralization using Negative Ions and Dust Particles},
author = {A. Smirnov and Y. Raitses and N.J. Fisch},
abstractNote = {Ion current extracted from an ion source (ion thruster) can be increased above the Child-Langmuir limit if the ion space charge is neutralized. Similarly, the limiting kinetic energy density of the plasma flow in a Hall thruster might be exceeded if additional mechanisms of space charge neutralization are introduced. Space charge neutralization with high-mass negative ions or negatively charged dust particles seems, in principle, promising for the development of a high current or high energy density source of positive light ions. Several space charge neutralization schemes that employ heavy negatively charged particles are considered. It is shown that the proposed neutralization schemes can lead, at best, only to a moderate but nonetheless possibly important increase of the ion current in the ion thruster and the thrust density in the Hall thruster.},
doi = {10.2172/836621},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 25 00:00:00 EST 2005},
month = {Tue Jan 25 00:00:00 EST 2005}
}

Technical Report:

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