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PBFA II ion diode theory and implications

Published online by Cambridge University Press:  09 March 2009

J. P. Vandevender
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico, USA
S. A. Slutz
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico, USA
D. B. Seidel
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico, USA
R. S. Coats
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico, USA
P. A. Miller
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico, USA
C. W. Mendel Jr.
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico, USA
J. P. Quintenz
Affiliation:
Sandia National Laboratories, Albuquerque, New Mexico, USA

Abstract

Fully electromagnetic, relativistic, two-dimensional, particle-in-cell (PIC) simulations of barrel-type and extractor-type Applied-B ion diodes have increased our confidence in the design of present and future diodes for the Particle Beam Fusion Accelerator II (PBFA II). In addition, the data from various experiments on Pro to I, Proto II, and PBFA I Applied-B ion diodes are inconsistent with previous models of diode operation, based on anode-cathode gap closure from expanding plasmas. A new model has been devised and applied to the PBFA II diode to explain the diode impedance and its time history, and to suggest methods for controlling the impedance.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1987

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