Instability of drift-like waves and cross-field charged particle transport in a nonuniform collisional quantum magnetoplasmaS. Ali, Nitin Shukla and P. K. Shukla
Institut für Theoretische Physik IV, Fakultät für Physik und Astronomie, Ruhr-Universität Bochum - D-44780 Bochum, Germany
received 9 February 2007; accepted in final form 29 March 2007; published May 2007
published online 27 April 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.
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