Torus-shaped dust clouds trapped in a magnetized anodic plasma

Journal Article · Wed Oct 15 04:00:00 EDT 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3006085· OSTI ID:21254573

Pilch, Iris; Reichstein, Torben; Piel, Alexander ^[1]

---

1. IEAP, Christian-Albrechts-Universitaet, D-24098 Kiel (Germany)

Dust particles confined in a magnetized anodic plasma can form a torus-shaped cloud with a dust-free region (void) in the center. Most of the dust particles perform a rotational motion about the major axis of the torus. The torus-shaped dust cloud and the velocity of the particles are studied by varying the external plasma parameters like magnetic field strength and rf-power of the source plasma. Two-dimensional potential contours are measured with an emissive probe. The results are used to discuss the force balance between electric field force and ion drag acting on the dust particles that determines the void size.

• OSTI ID: 21254573
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 10 Vol. 15; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DUSTS
ELECTRIC FIELDS
MAGNETIC FIELDS
PLASMA
PLASMA CONFINEMENT
PROBES
TRAPPING
TWO-DIMENSIONAL CALCULATIONS
VOIDS