Millimeter wave emission from a rotating electron ring in a rippled magnetic field

G. Bekefi, R. E. Shefer, W. W. Destler
1984 Applied Physics Letters  
We report measurements of millimeter wave emission from a rotating relativistic electron ring (2MV, 1kA) in which electrons move in quasi-circular orbits under the combined action of a uniform axial magnetic field and an azimuthally periodic wiggler magnetic field. We observe radiation at frequencies between 91 and 170GHz, at power levels in excess of 200kW.
doi:10.1063/1.94747 fatcat:uyneb4qe3fhclbrpyqoq3efjay