Abstract
A pseudospark (PS) plasma sourced electron beam was both computationally and experimentally studied for generation of millimetre wave and terahertz radiation. The beam-wave interaction region is a sinusoidal rippled-wall slow wave structure of a backward wave oscillator (BWO) in G-band. An electron beam of ∼1 mm diameter carrying a current of up to 10 A with a sweeping voltage of 42 to 25 kV and pulse duration of 25 ns propagated through the interaction region in a plasma environment without the need for a guiding magnetic field, which resulted in broadband millimetre radiation generation over a frequency range of 186-202 GHz with a maximum power of 20 W.
Original language | English |
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Title of host publication | IET Colloquium on Millimetre-Wave and Terahertz Engineering & Technology 2016 |
Place of Publication | Stevenage |
DOIs | |
Publication status | Published - 31 Mar 2016 |
Keywords
- BWO
- pseudospark
- terahertz generation
- terahertz wave generation
- backward wave oscillators
- electron beams
- millimetre wave generation
- plasma sources
- slow wave structures