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Title: Two-dimensional space-charge-limited flows in a crossed-field gap

Abstract

This letter presents a two-dimensional (2D) model of space-charge-limited current in a planar crossed-field gap with a magnetic strength of B/B{sub H}=0-3, where B{sub H} is the Hull cutoff magnetic field. The electrons are emitted from an infinite length strip of finite width W comparable to the gap spacing D. It is found that the 2D enhancement of the crossed-field limiting current is 1+Fx4D/({pi}W), where F (=0.05-0.5) is a normalized mean-position factor, and it is a function of B/B{sub H}. Good agreement has been obtained in comparisons with particle-in-cell simulation.

Authors:
;  [1]
  1. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore and Institute of High Performance Computing, Singapore 117528 (Singapore)
Publication Date:
OSTI Identifier:
20960192
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 90; Journal Issue: 14; Other Information: DOI: 10.1063/1.2720710; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPARATIVE EVALUATIONS; CROSSED FIELDS; ELECTRON EMISSION; ELECTRONS; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; PLASMA; PLASMA SIMULATION; SPACE CHARGE; TWO-DIMENSIONAL CALCULATIONS

Citation Formats

Koh, W. S., and Ang, L. K. Two-dimensional space-charge-limited flows in a crossed-field gap. United States: N. p., 2007. Web. doi:10.1063/1.2720710.
Koh, W. S., & Ang, L. K. Two-dimensional space-charge-limited flows in a crossed-field gap. United States. doi:10.1063/1.2720710.
Koh, W. S., and Ang, L. K. Mon . "Two-dimensional space-charge-limited flows in a crossed-field gap". United States. doi:10.1063/1.2720710.
@article{osti_20960192,
title = {Two-dimensional space-charge-limited flows in a crossed-field gap},
author = {Koh, W. S. and Ang, L. K.},
abstractNote = {This letter presents a two-dimensional (2D) model of space-charge-limited current in a planar crossed-field gap with a magnetic strength of B/B{sub H}=0-3, where B{sub H} is the Hull cutoff magnetic field. The electrons are emitted from an infinite length strip of finite width W comparable to the gap spacing D. It is found that the 2D enhancement of the crossed-field limiting current is 1+Fx4D/({pi}W), where F (=0.05-0.5) is a normalized mean-position factor, and it is a function of B/B{sub H}. Good agreement has been obtained in comparisons with particle-in-cell simulation.},
doi = {10.1063/1.2720710},
journal = {Applied Physics Letters},
number = 14,
volume = 90,
place = {United States},
year = {Mon Apr 02 00:00:00 EDT 2007},
month = {Mon Apr 02 00:00:00 EDT 2007}
}