Collisional damping of plasma waves on a pure electron plasma column

摘要: The collisional damping of electron plasma waves (or Trivelpiece–Gould waves) on a pure column is discussed. in differs from that neutral plasma, since there are no ions to provide drag. A dispersion relation for the complex wave frequency derived Poisson’s equation and drift-kinetic with Dougherty collision operator—a Fokker–Planck operator conserves particle number, momentum, energy. For large phase velocity, where Landau negligible, yields ω=(kzωp∕k)[1+(3∕2)(kλD)2(1+10iα∕9)(1+2iα)−1], ωp frequency, kz axial wavenumber, k total λD Debye length, ν α≡νk∕ωpkz. This expression spans weakly regime (α⪡1) moderately (α∼1) limit rate which smaller than plasm...