Ionization instability in dusty plasmas

Journal Article · Mon Sep 01 04:00:00 EDT 1997 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.872484· OSTI ID:538485

DAngelo, N ^[1]

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1. Department of Physics and Astronomy, The University of Iowa, Iowa City, Iowa 52242 (United States)

The ionization instability in a dusty plasma in which the neutral gas is ionized by a constant flux of energetic electrons with energy slightly above the ionization energy is examined by using fluid equations for the three charged components, namely positive ions, electrons, and negatively charged dust grains. The presence of negatively charged dust increases both the frequency and the growth rate of the IA (ion-acoustic) wave excited through the ionization instability. The DA (dust-acoustic) mode, even in the absence of ion{endash}neutral collisions, ion viscosity, and neutral gas drag on the dust grains, is always damped within the parameter ranges explored here and relevant to laboratory plasmas. The present results on the DA wave excitation are at variance with results obtained by Shukla and Morfill [Phys. Lett. A {bold 216}, 153 (1996)]. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 538485
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 9 Vol. 4; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DUSTS
INSTABILITY GROWTH RATES
ION ACOUSTIC WAVES
IONIZED GASES
PLASMA FLUID EQUATIONS
PLASMA IMPURITIES
PLASMA INSTABILITY