M. B. Goykhman, A. V. Gromov, V. V. Kladukhin, N. F. Kovalev, N. G. Kolganov, A. V. Palitsin, S. P. Khramtsov, “Low-impedance relativistic backward wave oscillator”, Pisma v Zhurnal Tekhnicheskoi Fiziki, 2011, Volume 37, Issue 7,Pages <nobr>87

Low-impedance relativistic backward wave oscillator

M. B. Goykhman^ab, A. V. Gromov^ab, V. V. Kladukhin^ab, N. F. Kovalev^ab, N. G. Kolganov^ab, A. V. Palitsin^ab, S. P. Khramtsov^ab

^a Institute of Applied Physics, Russian Academy of Sciences, Nizhny Novgorod
^b Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, Ekaterinburg

Abstract: It is shown that the limiting electron-beam current in a relativistic backward wave oscillator (BWO) can be increased using a slow-wave system (SWS) in the form of a circular waveguide with shallow rectangular corrugation. This idea was checked both experimentally and numerically for a 3-cm BWO with a short homogeneously corrugated SWS and a resonance reflector-modulator. The experiments showed that the proposed BWO with an explosion-emission electron gun and said SWS can effectively operate on 60-Ohm electron beams at a gigawatt output power.

Received: 01.11.2010