| EPSRC Reference: |
GR/N14477/01 |
| Title: |
CHAOTIC AUTOMODULATION PHENOMENA IN ELECTRON CYCLOTRON MASERS |
| Principal Investigator: |
Phelps, Professor ADR |
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| Department: |
Physics |
| Organisation: |
University of Strathclyde |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
04 April 2000 |
Ends: |
03 April 2003 |
Value (£): |
169,609
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| EPSRC Research Topic Classifications: |
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| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
Communications |
| Electronics |
Energy |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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Electron Cyclotron Maser oscillator experiments sometimes observe a rapid modulation in the microwave output signal with a period of a few nanoseconds. Recent preliminary experiments at Strathclyde University have demonstrated that this behaviour depends strongly on the length of the interaction space. It is thought that the chaotic automodulation is due to multiple longitudinal hot cavity modes beating against each other. We propose the first systematic experimental investigation of this phenomenon.An electron beam from a plasma-flare cathode will be injected into an ill-defined cylindrical cavity surrounded by a co-axial solenoid. The electron beam current and profile will be studied. The influence of the beam current, the length of both the cavity and the interaction space and the magnitude of the feedback signal on the stability of the oscillator will be measured to understand how each parameter affects the automodulation behaviour. The spectral content of the output radiation will be measured. Measurements will be made of the efficiency of the experiment in converting the electron kinetic energy into electromagnetic radiation. Time dependent numerical simulations of an Electron Cyclotron Maser oscillator will be performed and compared to the experimental results and analytical theory to provide an understanding of the automodulation behaviour.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.strath.ac.uk |