Abstract
A linear stability analysis of ion-acoustic and dust-acoustic waves is carried out using a multifluid model in the presence of ionization, ion drag, and collisions of ions and dust with the background neutral gas. It is found that an unstable dust-acoustic mode of nonzero real frequency can be generated via a resonance phenomenon. This resonance develops as the frequency of the dust-ion-acoustic mode is reduced sufficiently in the long-wavelength regime that it couples strongly to the dust-acoustic mode. As the charge on dust particles exceeds a threshold, multiple low-frequency modes with large growth rates are excited suddenly. Predictions of the theory are compared with experimental results [D. Samsonov and J. Goree, Phys. Rev. E 59, 1047 (1999)].
Original language | English (US) |
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Pages (from-to) | 5018-5024 |
Number of pages | 7 |
Journal | Physics of Plasmas |
Volume | 8 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2001 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics