Space charge effects as a source of electron energy spread and efficiency degradation in gyrotrons

Space charge effects as a source of electron energy spread and efficiency degradation in gyrotrons

Space charge effects (so-called negative-mass instability) as the reason for electron energy spread developing in the region of the electron drift between the cathode and the cavity of a gyrotron are discussed. The quasioptical gyrotron working at third harmonic that is developed at Centre de Recher...

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Veröffentlicht in:IEEE transactions on plasma science 2000-06, Vol.28 (3), p.633-637
Hauptverfasser: Bratman, V.L., Dumbrajs, O., Nikkola, P., Savilov, A.V.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Cathodes
Cyclotrons
Degradation
Electron beams
Electron energy
Electronic tubes, masers
Electronics
Electrons
Elementary processes in plasma
Energy
Exact sciences and technology
Gyrotrons
Holes
Instability
Instruments
Masers
Masers
gyrotrons (cyclotron-resonance masers)
Nuclear physics
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasmas
Radio frequency
Space charge
Spreads
Stability
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Zusammenfassung:Space charge effects (so-called negative-mass instability) as the reason for electron energy spread developing in the region of the electron drift between the cathode and the cavity of a gyrotron are discussed. The quasioptical gyrotron working at third harmonic that is developed at Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Federale de Lausanne, is used to demonstrate the expected efficiency degradation.
ISSN:0093-3813
1939-9375
DOI:10.1109/27.887690