AN ELECTRON MASER INSTABILITY
电子迴旋激射不稳定性

The electron cyclotron maser instability is analyzed for the following case, in which a relativistic monoenergetic electron beam is injected into a background plasma, but the beam direction is initially oblique to the ambient magnetic field. We consider that the electron plasma frequency is comparable to the electron cyclotron frequency associated with the external magnetic field and study the situation: (1) the background plasma density n0 is much larger than that of the suprathermal electron ns and (2) n0