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Analytical modeling of a self-magnetically insulated plasma focus diode

Published online by Cambridge University Press:  09 March 2009

Weihua Jiang ,
Katsumi Masugata  and
Kiyoshi Yatsui
Weihua Jiang
Affiliation:
Laboratory of Beam Technology, Nagaoka University of Technology, Niigata 940–21, Japan
Katsumi Masugata
Affiliation:
Laboratory of Beam Technology, Nagaoka University of Technology, Niigata 940–21, Japan
Kiyoshi Yatsui
Affiliation:
Laboratory of Beam Technology, Nagaoka University of Technology, Niigata 940–21, Japan
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Abstract

A steady-state analytical model is used to calculate the operational parameters of a coaxial-type, self-magnetically insulated ion-beam diode, called a plasma focus diode (PFD). The electrons are described by nonlaminar flow with a constant radial density distribution instead of the density profile determined self-consistently by one-dimensional laminar flow. The calculated results were compared with the experimental results obtained at the peak power, and good agreement was obtained between them. From the theoretical understanding of the PFD we obtained the scaling relations of diode impedance and the ion-current efficiency and used them to discuss the possible ways to increase the coupling efficiency and the ion-current efficiency and to reduce the instabilities in the diode operation.

Type
Research Article
Information
Laser and Particle Beams , Volume 10 , Issue 1 , March 1992 , pp. 53 - 63
Copyright
Copyright © Cambridge University Press 1992

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