Current-driven dust-acoustic instability in a collisional plasma

Details Current-driven dust-acoustic instability in a collisional plasma Current-driven dust-acoustic instability in a collisional plasma

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996p%26ss...44.1593d&link_type=abstract

Planetary and Space Science, v. 44, p. 1593-1598.

Physics

57

Scientific paper

The excitation of the dust-acoustic instability in a collisional dusty plasma is investigated. For conditions similar to those of recent laboratory experiments with neutral gas pressures of ~100 mTorr, it is found that zero-order electric fields E0 >~ 10 V m-1 are sufficient for the growth of perturbations with centimeter wavelengths. Much larger wavelengths generally require larger values of E0. Free electrons in the dusty plasma have a stabilizing effect, which can be very pronounced at the longest wavelengths.

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