Obliquely Propagating Dust-Density Plasma Waves in the Presence of an Ion Beam

Journal Article · Fri Nov 17 04:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.97.205009· OSTI ID:20861157

Piel, A; Klindworth, M; Arp, O; Melzer, A; Wolter, M ^[1]

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1. 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, Journal Name: Physical Review Letters Journal Issue: 20 Vol. 97; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DUSTS
ION BEAMS
PLASMA
PLASMA DENSITY
SPACE CHARGE
VELOCITY