Whistler-mode electron cyclotron emission from the Phaedrus-B end cell

Whistler Emission by Electron Beams

Experimental and theoretical investigation of whistler waves produced in the interaction of a density modulated electron beam with a magnetized plasma are presented for the conditions of active space experiments in the Earth ionosphere as well as for the case of overdense laboratory plasmas. Structures of the electromagnetic fields far and near the beam, efficiency of the beam modulation, emitt...

Electron cyclotron maser emission from double footpoints in solar flares

It is now known from Yohkoh Hard X-ray Telescope observations that double (or even multiple) hard X-ray sources in flares are a common occurrence. These sources, which are positioned at the feet of coronal soft X-ray loops, are synchronised to within 0.1s and have similar spectra, strongly suggesting that they are produced by a single population of electrons accelerated/injected at some point i...

Free Electron Laser Operation in the Whistler Mode

The introduction of a strongly magnetized plasma in the inner region of a Free Electron Laser opens up the possibility of generating coherent radiation in the slow whistler mode using mildly relativistic electron beams. The frequency of emission, however, is limited to below the electron cyclotron frequency. The efficiency of the device can be enhanced by tapering the guide magnetic field.

Electron cyclotron emission imaging diagnostic on TEXTOR

A 16-channel electron cyclotron emission imaging diagnostic system, developed by UC Davis in collaboration with the FOM-Instituut voor Plasmafysica Rijnhuizen, has been installed on the Torus Experiment for Technology Oriented Research tokamak. The system is designed to collect multichannel electron temperature profile and fluctuation data along a vertical chord of constant magnetic field, by c...

Electron Cyclotron Emission Radiometer Upgrade on the JET Tokamak . Electron Cyclotron Emission Radiometer Upgrade on the JET Tokamak