Obliquely Propagating Dust-Density Plasma Waves in the Presence of an Ion Beam
Journal Article
·
· Physical Review Letters
- IEAP, Christian-Albrechts-Universitaet zu Kiel, D-24098 Kiel (Germany)
Self-excited dust-density waves are experimentally studied in a dusty plasma under microgravity. Two types of waves are observed: a mode inside the dust volume propagating in the direction of the ion flow and a new mode propagating obliquely at the boundary between the dusty plasma and the space-charge sheath. A model for dust-density waves propagating at an arbitrary angle with respect to the ion-flow direction is presented, which explains the preference for oblique or parallel modes as a function of ion velocity.
- OSTI ID:
- 20861157
- Journal Information:
- Physical Review Letters, Vol. 97, Issue 20; Other Information: DOI: 10.1103/PhysRevLett.97.205009; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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