Diffraction radiation oscillators for high-temperature plasma diagnostics and spectroscopy

V. P. Shestopalov

doi:10.1117/12.2298737

30 November 2017 Diffraction radiation oscillators for high-temperature plasma diagnostics and spectroscopy

V. P. Shestopalov

Proceedings Volume 2104, 18th International Conference on Infrared and Millimeter Waves; 21048H (2017) https://doi.org/10.1117/12.2298737
Event: 18th International Conference on Infrared and Millimeter Waves, 1993, Colchester, United Kingdom

Abstract

A variety of modifications of microwave oscillators with highfrequency stability have been developed in the Institute ofRadiophysics and electronics of Academy of Sciences of Ukraine forhigh-temperature plasma diagnostics and spectroscopy. One of them isnamed diffraction radiation oscillator (DRO). An operating principleof these oscillators is based on the diffraction radiation effect(Smith-Purcell) arising when an electron beam skims the surface ofmetallic diffraction grating placed on one open resonator's mirror.They have a low level of frequency noises near the carrirer. Forexample, this level amounts to -96 dB/Hz at 10 KHz separation from thecarrier. Oscillators are retuned in a wide frequency range (20-30%) bydisplacement of the open resonator's mirror. Main characteristics ofthe DRO at cathode current 0.1-0.12 A and cathode voltage 2-3 kV aregiven in the Table.

Citation Download Citation

V. P. Shestopalov "Diffraction radiation oscillators for high-temperature plasma diagnostics and spectroscopy", Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 21048H (30 November 2017); https://doi.org/10.1117/12.2298737

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