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Overmoded GW-class surface-wave microwave oscillator

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11 Author(s)
Vlasov, A.N. ; Sci. Applications Int. Corp., McLean, VA, USA ; Shkvarunets, A.G. ; Rodgers, J.C. ; Carmel, Y.
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Results of theoretical and experimental studies of a GW-class, large diameter microwave oscillator are presented. The device consists of a large cross-section (overmoded), slow-wave structure with a unique profile of wall radius specifically designed to support surface waves and to provide a strong beam-wave coupling at moderate voltage (500 kV), an internal adjustable microwave reflector, a coaxial microwave extraction section, and a coaxial magnetically insulated field emission electron gun. In preliminary experiments carried out at 8.3 GHz, the power level exceeding 0.5 GW and efficiency of 15% have been measured calorimetrically

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Plasma Science, IEEE Transactions on  (Volume:28 ,  Issue: 3 )