Abstract
The emission from a plasma in a nuiform magnetic field Is studied near electron cyclotron harmonic frequencies. Following the dressed test perticle approach, the energy lost by one test electron is calculated and, from this, the total emission is given as the sum over all electrons weighted hi their velocity distribution by the superposition principle of the dressed test particles. In general, dispersion relation for the electrostatic wave propagating to the direction nearly perpendicular to the magnetic field has two solutions, compriing-a slow electrostatic wave and a fast electrostatic wave. It is found in the Allis diagram that the emission peaks for these waves shift from the lower harmonic side to the higher side with a considerably-different way to each other. The emission power of the slow wave is much greater than that of the fast wave, because the number of the electrons which contribute to excitation of the slow wave is large and also √λ= (thermal velocity/phase velocity) is large.
