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Journals and Conferences
A helically corrugated waveguide was used for a gyrotron backward-wave oscillator (gyro-BWO) experiment. A thermionic cathode was used to produce an electron beam of 90-215 keV in energy, 2-3 A in… (More)
In this Letter, we present theory and particle-in-cell simulations describing cyclotron radio emission from Earth's auroral region and similar phenomena in other astrophysical environments. In… (More)
There are numerous types of astrophysical radio emission in association with non-uniform magnetic fields that have been the subject of particular interest and debate over the last thirty years .… (More)
An experimental simulation of the Earth's Auroral Magnetosphere has been created. Experiments have been undertaken to study the processes by which the auroral cyclotron maser emission occurs.
Ionospheric modification experiments conducted at facilities such as HAARP  have shown the induced formation of magnetic field-aligned density striations in the ionospheric F-region by high… (More)
In the auroral regions of the Earth's magnetosphere, electric fields accelerate electrons downwards towards the Earth's surface into an increasing magnetic field. Due to conservation of the magnetic… (More)
Laboratory experiments and numerical simulations are reported that study cyclotron emission processes and the radiation inhibition by background plasma.
Efficient (~1%) electron cyclotron radio emissions are known to originate in the X mode from regions of locally depleted plasma in the Earths polar magnetosphere. These emissions are commonly… (More)
In this paper the results of PiC code simulations and a laboratory experiment to investigate the evolution of an electron beam subject to magnetic compression of up to a factor of 30 is outlined. The… (More)
When a beam of electrons encounters an increasing magnetic field along its vector of motion, conservation of the magnetic moment results in the formation of a crescent or horseshoe shaped velocity… (More)