Generation of high power, high frequency radiation using high brightness pseudospark-sourced relativistic electron beams
Lead Research Organisation:
Queen Mary University of London
Department Name: Sch of Electronic Eng & Computer Science
Abstract
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People |
ORCID iD |
| Xiaodong Chen (Principal Investigator) |
Publications
Bowes D
(2014)
X-ray emission as a diagnostic from pseudospark-sourced electron beams
in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Bowes D
(2014)
Visualization of a Pseudospark-Sourced Electron Beam
in IEEE Transactions on Plasma Science
Xiaodong Chen (Author)
(2010)
Investigation Of A Klystron With A Pseudospark-Sourced Electron Beam
Xiaodong Chen (Co-Author)
(2011)
Numerical Study of Pseudospark Discharged Electron Beam and Propagation for W-Band Radiation
| Description | To achieve higher BWO output power levels in the hundreds of GHz to THz range, a higher current density electron beam, around the 100s of A/cm2, is required. But as the frequency is increased towards the THz range, the diameter of the BWO interaction region has to be reduced in order to prevent the beam-wave interaction region becoming overmoded which results in a loss of the temporal or spatial coherence of the output radiation. To satisfy the beam requirements for THz devices, the pseudospark-sourced electron beam was used due to it possessing the highest combined beam density and brightness as compared to any other electron beam source. Because of its high current emission and special discharge characteristics it has many useful potential applications such as an electron beam driven X-ray source, THz remote imaging and plasma diagnostics. |
| Exploitation Route | The pseudospark source has attracted significant world wide interest due to its ability to generate THz radiation without the need to use an axial guide magnetic field. |
| Sectors | Education Electronics Healthcare Manufacturing including Industrial Biotechology |
| Description | A pseudospark discharge to generate a sub-mm diameter electron beam that does not require an external magnetic field to drive a high frequency millimetre wave source has been achieved. It was demonstrated that the initial high-energy electrons generated by the pseudospark discharge ionises the background gas to form a plasma channel, the electron beam subsequently generated by the PS discharge then propagates along the plasma channel. The research output from this project has been excellent, as witnessed by the substantial number of publications in journals and also the dissemination of the research has been strongly promoted by publication in research conferences. The pseudospark research was selected for five invited talks {(ICTP Trieste, Italy, 2009), (MIT, Boston USA, 2010) and (VEDA-2012 CSIR-CEERI, Pilani, Rajasthan, India, 2012)}, International Conference on Plasma Science, Technology and Applications (ICPSTA-2016), Amity School of Applied Sciences, Amity University Uttar Pradesh (AUUP), Lucknow campus, India. |
| First Year Of Impact | 2009 |
| Sector | Education,Electronics,Healthcare,Manufacturing, including Industrial Biotechology |
| Impact Types | Economic |
| Description | Adrian Cross |
| Organisation | University of Strathclyde |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | My group carried out some modelling of the pseudospark discharge using the Particle In Cell code MAGIC |
| Collaborator Contribution | Prof Cross' group conducted an extensive experimental work |
| Impact | 6 joint papers |
| Start Year | 2010 |