Generation of electromagnetic radiation by plasma rotating in crossed electrostatic and magnetic fields

Generation of electromagnetic waves by plasma ring layer which is rotating in crossed radial electrostatic and axial magnetic fields in a cylindric resonator is studied theoretically. Dispersion equations which describe wave-plasma interaction are obtained. It was shown that wave generation by a narrow layer is possible by cyclotron, Cherenkov or plasma resonances. Wave frequencies and increments are found for mentioned resonances in a homogeneous plasma layer. The advantages and disadvantages of wave generation under different conditions are noted. 9 refs