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as a function of the parameter for various microwave sources. The regions of positive and negative mass (stable and unstable regions) are indicated. This plot is for .
Azimuthal current for (top) showing electrostatic oscillation beating at the reduced plasma frequency, and for (bottom) showing growth due to the negative mass instability for the inverted magnetron configuration.
Frequencies of oscillation from the dispersion relation and those extracted from MAGIC.
Electron beam at 0.2 ns [top] and 11.5 ns [bottom] for the inverted magnetron configuration showing negative mass behavior.
Normalized growth rates from the dispersion relation and from MAGIC.
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