Dust-ion-acoustic precursor of a shock wave
V. A. Pavlov
Institute of Radiophysics, St. Petersburg State University, St. Petersburg 198904
Pages: 249-255
Abstract
The effect of charged dust particles on
the structure of the plasma precursor of
a strong shock wave is studied. The
conditions of formation of a weak
discontinuity front are obtained. It is
shown that resonant modes can occur in
which the concentration of dust
particles in the neighborhood of the
front increases. In the case of
positively charged particles of dust,
the formation of a localized compaction
region in the form of a soliton "bunch"
is possible and the dependence of the
amplitude of the soliton on shock-wave
velocity is nonmonotonic. In the case of
negatively charged particles of dust, a
rarefaction wave is formed. The
indicated phenomena can substantially
affect the concentration of the neutral
component in a slightly ionized plasma.
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