Volume 78, Number 4, May 2007
|Number of page(s)||4|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||27 April 2007|
Instability of drift-like waves and cross-field charged particle transport in a nonuniform collisional quantum magnetoplasma
Institut für Theoretische Physik IV, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum - D-44780 Bochum, Germany
Accepted: 29 March 2007
By employing the two-fluid quantum plasma model, we derive a dispersion relation for the low-frequency (in comparison with the ion gyrofrequency) electrostatic drift-like waves in a nonuniform collisional quantum magnetoplasma. The dispersion relation, which contains the electron-neutral collisions, the electron-ion number density gradients and the electron quantum- mechanical effects, is analyzed to obtain the real and imaginary parts of the drift-like wave frequency. It is found that modified drift-like waves are unstable in a nonuniform collisional quantum magnetoplasma. Unstable drift-like waves can cause cross-field anomalous ion diffusion.
PACS: 52.35.Kt – Drift waves / 52.27.-h – Basic studies of specific kinds of plasmas / 52.35.Hr – Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid)
© Europhysics Letters Association, 2007
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