119 research outputs found
On Dust Charging Equation
A general derivation of the charging equation of a dust grain is presented,
and indicated where and when it can be used. A problem of linear fluctuations
of charges on the surface of the dust grain is discussed.Comment: Invited Talk National Symposium on Plasma Physics Jan 28, 2008
Islamaba
Excitation of Longitudinal Waves in a Degenerate Isotropic Quantum Plasma
A dispersion equation, which describes the interaction of low density
electron beam with a degenerate electron quantum plasma, is derived and
examined for some interesting cases. In addition to the instabilities similar
to those for classical plasma, due to the quantum effect a new type of
instability is found. Growth rates of these new modes, which are purely
quantum, are obtained. Furthermore, the excitation of Bogolyubov's type of
spectrum by a strong electric field is discussed.Comment: Submitted to Journal of Plasma Physics special issu
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