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Experimental and numerical investigation of auroral cyclotron maser processes

Phelps, A.D.R. and Speirs, David and McConville, S.L. and Gillespie, K.M. and Ronald, K. and Cross, A.W. and Bingham, R. (2007) Experimental and numerical investigation of auroral cyclotron maser processes. In: Proceedings of the Eighth IEEE International Vacuum Electronics Conference. IEEE International Vacuum Electronics Conference IVEC . IEEE, pp. 429-430. ISBN 1-4244-0633-1

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Abstract

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 experiment consisted of a 75 keV electron beam with significant initial sbeam with significant initial spread in velocity injected into an adjustable convergent magnetic field generated by a solenoid arrangement. The aim was to produce a horseshoe shaped electron velocity distribution and study the subsequent evolution of this distribution within an interaction waveguide at the peak of the axial magnetic field.