Prakash Bramha, Mishra Ganeswar, Khullar Roma
Insertion Device Development Laboratory, Department of Physics, Devi Ahilya University, Indore, Madhya Pradesh 452001, India.
J Synchrotron Radiat. 2016 Mar;23(2):430-5. doi: 10.1107/S1600577515024716. Epub 2016 Feb 10.
In this paper spontaneous emission of radiation by relativistic electrons in a gyro-klystron is studied. The scheme consists of two solenoid sections separated by a dispersive section. In the dispersive section the electrons are made non-resonant with the radiation. The dispersive section transforms a small change of the velocity into changes of the phases of the electrons. This leads to enhanced radiation due to klystron-type modulation as compared with a conventional gyrotron-type device driven by cyclotron maser interaction. It is shown that the klystron-modulated spectrum depends on the dispersive field strength, finite perpendicular velocity component and length of the solenoids but is independent of the axial magnetic field strength. A simple scheme to design a gyro-klystron is discussed.
