December 2013
Intermediate to advanced
392 pages
13h 29m
English
Content preview from Compact Plasma and Focused Ion Beams
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105
7
Comparison of Square and Near-Circular
Multicusp Waveguides
Introduction
In Chapter 4, we saw that a plasma with a density greater than the O-mode
cutoff density could be produced and maintained in a near-circular multi-
cusp (10 poles) waveguide, with a dimension below the cutoff value. Chapter
6 dealt with a rectangular waveguide with a nonmulticusp magnetic eld and
a dimension below the cutoff value. The plasma properties and the power
absorption in the ordinary (O-mode) and extraordinary (X-mode) modes have
been studied. The individual study was useful because both the modes can
occur when waves are launched into a multicusp, dependi ...
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