Streaming instability in quantum dusty plasmas |
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Authors: | S Ali P K Shukla |
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Institution: | 1.Institut für Theoretische Physik IV and Centre for Plasma Science and Astrophysics, Fakult?t für Physik und Astronomie, Ruhr–Universit?t Bochum,Bochum,Germany |
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Abstract: | By using a quantum hydrodynamic (QHD) model, we derive a generalized
dielectric constant for an unmagnetized quantum dusty
plasma
composed of
electrons, ions, and charged dust particulates. Neglecting the electron
inertial force in comparison with the electron pressure, and the force
associated with the electron correlations at a quantum scale, we discuss two
classes of electrostatic instabilities that are produced by streaming ions,
and dust grains. The effects of the plasma streaming speeds, the thermal
speed of electrons, and the quantum parameter are examined on the growth
rates. The relevance of our investigation to dense astrophysical plasmas is
discussed. |
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Keywords: | PACS" target="_blank">PACS 52 35 -g Waves oscillations and instabilities in plasmas and intense beams 52 30 -q Plasma dynamics and flow 52 35 Fp Electrostatic waves and oscillations (e g ion-acoustic waves) 52 27 Lw Dusty or complex plasmas plasma crystals |
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