Experiments on W-band extended interaction oscillator with pseudospark sourced post-accelerated electron beam

Abstract

This version is available at https://strathprints.strath.ac.uk/60792/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the The experimental study of a pseudospark discharge sourced electron beam with post acceleration (PA) is presented. The PA circuit was used to drive a W-band extended interaction oscillator. The experiments showed a significant increase in the output power, with 200 W at 94 GHz measuring corresponding to a 5 times increase in the output power as compared to when post acceleration is not used. The microwave device developed has the advantage of not requiring an external magnetic field making it a low cost, compact, and portable sub-terahertz radiation source. Published by AIP Publishing.[http://dx

Study of millimetre wave extended interaction oscillation using pseudospark-sourced E-beams

“…Recently a single-gap PS-sourced electron beam was also studied using a novel methodology of an integrated post acceleration section to achieve high current density and low energy spread beam [17][18]. Fig.1 shows the PS-beam after post-acceleration and Fig.2 is the beam image.…”

Demonstration of a Planar ${{W}}$ -Band, kW-Level Extended Interaction Oscillator Based on a Pseudospark-Sourced Sheet Electron Beam

“…IGH power millimeter-wave vacuum electron devices (VEDs) have received considerable interest because of their diverse applications such as satellite communications, high resolution radar, and plasma science [1][2][3]. Compared with the electron beam generated by a conventional thermionic cathode electron gun, the pseudospark-sourced electron beam (PS-EB) has many advantages, including much higher beam current density (>10 8 A/m 2 ), beam propagation without the need of an external guiding magnetic field, room-temperature operation, instant start-up and low vacuum requirement (50-500 mTorr) [4][5][6][7][8][9][10][11]. In addition, the PS-EB based VEDs can be fabricated using available technology such as wire erosion, which ensures the costs of production are moderate while at the same time a hand-held, portable, light-weight device can be manufactured.…”

“…In addition, the PS-EB based VEDs can be fabricated using available technology such as wire erosion, which ensures the costs of production are moderate while at the same time a hand-held, portable, light-weight device can be manufactured. Several kinds of VEDs that used pencil-shaped PS-EB have been experimentally studied, including a Ka-band Cherenkov maser [5], a 0.2 THz backward wave oscillator [6] and a W-band extended interaction oscillator (EIO) [8][9]. An EIO is one of the very promising powerful millimeter-wave and terahertz-wave radiation sources due to its advantages such as intensive beam wave interaction and short interaction length.…”

Investigation of millimeter wave extended interaction oscillation using improved pseudospark-sourced electron beams

“…To achieve better beam quality, the PS-sourced electron beam is also investigated with post-acceleration to reduce its beam energy spread [8][9][10]. To achieve higher output power, a sheet beam EIO structure is further studied with a PS-sourced sheet beam [11].…”