Open AccessAN ELECTRON MASER INSTABILITY
Author(s) -
XU MlN-JIAN,
Wu Jing-Sheng
Publication year - 1985
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.34.1119
Subject(s) - physics , cyclotron , maser , atomic physics , electron , plasma , instability , magnetic field , cyclotron radiation , harmonic number , relativistic electron beam , cathode ray , astrophysics , nuclear physics , riemann zeta function , mathematical analysis , mathematics , quantum mechanics , mechanics
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) n0s. The relativistic effects destablized the o and x mode with frequencies respectively in the vicinity of the fundamental and the second harmonic of the electron cyclotron frequencies. The growth rates of both modes are computed and discussed.