Experiment on the Nonlinear Phenomena in an Electron Cyclotron Resonance Plasma

Two hysteresis loops and tristable states in an electron cyclotron resonance plasma system have been observed and oscillatory waveforms and their power spectra in different stable state are described in this paper. As the microwave power was increased, the oscillation with original fundamental frequency gradually transferred to harmonic frequencies and then sudden jumped to a regular oscillation with single fourth harmonic frequency.