Propagation of Electron Waves in a Now-Maxwellian Plasma

抄録

The dispersion relation of electron waves in a non-Maxwellian plasma has been investigated experimentally. It is observed that the dispersion relation of the Landau mode is modified and that a new wave mode with the dispersion relation ω⁄k\simeq(1⁄2)V_c (V_c: truncated velocity) is observed for frequencies less than the electron Langmuir frequency. Those experimental results are compared with a simple theoretical model.