ISSN:
1089-7674
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
In a recent publication [Phys. Fluids B 5, 3864 (1993)], a study has been presented on the absorption mechanisms of whistler waves in cool, dense, cylindrically bounded plasmas. The dispersion relation obtained was used to explore the transition from Landau dominated damping to cyclotron dominated damping. Although the frequencies of these waves are well below the electron cyclotron frequency, the cyclotron resonance terms were retained in full since for high density plasmas, the density dependent parallel wave number can be large enough to bring thermal electrons into cyclotron resonance. It is the purpose of the present Comment to show that, within the approximations used in the article above, off-diagonal terms, which were neglected, can give an important contribution to the dispersion and damping of the waves for the parameters considered, and therefore should be retained in the calculation.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.870884
