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Author Kaup, D. J.
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Theoretical Modeling ♦ A6 Relativistic Magnetron ♦ Rf Mode ♦ Dc Background ♦ Dominant Interaction ♦ Later Operating Stage ♦ Similar Result ♦ Rf Pump Mode ♦ Possible Source ♦ Relativisitic Magnetron ♦ Dc Background Mode ♦ Dc Electromagnetic Force ♦ Wave-particle Resonance ♦ Certain Parameter Regime ♦ Physical Interaction Space ♦ Brillouin Edge ♦ Initialization Stage ♦ Parameter Regime ♦ Cylindrical Geometry ♦ Nonlinear Instability ♦ Unstable Linear Eigenmode ♦ A6 Cylindrical Design ♦ Planar Model ♦ Dominant Mode ♦ Ponderomotive Force ♦ Initiation Stage ♦ Numerical Data ♦ Experimental Result
Abstract The modeling of the initialization stage of a relativisitic magnetron of the A6 cylindrical design has been accomplished by using only the two dominant modes: a dc background mode and an rf pump mode. These two modes interaction nonlinearly, with the dc background being driven by the dc electromagnetic forces and the ponderomotive forces of the rf mode, while the rf mode is taken to be simply the most unstable linear eigenmode of this dc background. The dominant interaction in this device is seen to be the wave-particle resonance (diocotron). In cylindrical geometry, this resonance can be found to occur over a much broader region that in planar models. In fact, in certain parameter regimes, the resonance can appear twice inside the physical interaction space, once near the Brillouin edge, and second, just below the anode. Consequently, in these parameter regimes, the oscillating electrons will be generally accelerated twice. These results, although only for the initiation stage, nevertheless agree quite well with the known experimental results on the A6. Results for 350Kv are emphasized, but similar results have also been obtained between the voltages of 300Kv and 500Kv. Numerical data is also presented that indicates a possible source for a nonlinear instability, which could give rise to pulse-shortening, in the later operating stage, where the device should be smoothly delivering power.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study