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Projects: Projects for Investigator
Reference Number EP/D037093/1
Title Beam driven instabilities in magnetized plasmas
Status Completed
Energy Categories Nuclear Fission and Fusion(Nuclear Fusion) 50%;
Not Energy Related 50%;
Research Types Basic and strategic applied research 100%
Science and Technology Fields PHYSICAL SCIENCES AND MATHEMATICS (Physics) 40%;
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Professor RA Cairns
No email address given
Mathematics and Statistics
University of St Andrews
Award Type Standard
Funding Source EPSRC
Start Date 01 January 2006
End Date 31 December 2008
Duration 36 months
Total Grant Value £202,599
Industrial Sectors Energy
Region Scotland
Programme Physical Sciences
Investigators Principal Investigator Professor RA Cairns , Mathematics and Statistics, University of St Andrews (99.999%)
  Other Investigator Professor R (Bob ) Bingham , Physics, University of Strathclyde (0.001%)
Web Site
Abstract Electromagnetic radiation is another, broader, name for light, encompassing radio waves through to gamma rays. This proposal intends to investigate the ability of an electron beam gyrating in a fixed magnetic field to interact with an electromagnetic wave, in the microwave part of the spectrum. In certain conditions this interaction can be arranged so that the electrons slow down, and the energy they lose is conserved by an increase in the energy of the wave. This process is effectively LASERaction. In particular the project will consider an electron beam where some electrons are very nearly travelling along the magnetic field lines and others are gyrating nearly perpendicularly to it. A new theoretical idea has been proposed as a result of astronomical observations which expects especially high growth rates to occur from this type of electron beam and potentially efficient conversion of the electron energy to wave energy. To evaluate this potential, and the validity of the theoretical idea, the project will conduct an experiment where such a beam will be produced by magnetic compression and the emissions from the beam will be observed for different values of the magnetic field and radiation field distributions. Measurements of the beam current, voltage position and velocity will be compared to the measurements of the amplitude and frequency of the microwave emissions. Theoretical research will also be undertaken to ensure the expected behaviour is compared accuratelywith the actually realisable experimental geometry. This combined approach of theoretical and experimental investigation will allow the project to compare the experimental results with the predictions of the theoretical model and also with the output of computational simulations, thereby establishing its validity and potential for applications
Publications (none)
Final Report (none)
Added to Database 11/07/07