Collisional effects on interaction potential in complex plasma in presence of magnetic field

Journal Article · Fri Apr 15 04:00:00 EDT 2016 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4944917· OSTI ID:22599175

Bezbaruah, Pratikshya; Das, Nilakshi ^[1]

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1. Department of Physics, Tezpur University, Tezpur, Assam 784028 (India)

Interaction potential in complex plasma with streaming ions is derived analytically in presence of ion-neutral collision and magnetic field. The linear dielectric response function obtained describes the behavior of charged micron sized dust particles in strong collisional limit. A new type of repulsive potential is found to be operative among the dust grains apart from the normal Debye–Hückel potential. The amplitude and shielding length involved in the potential are substantially affected by the parameters describing ion cyclotron frequency, collision frequency among ions and neutrals, and ion streaming. It is also observed that the usual mechanism of ion focusing surrounding the grain is inhibited due to collision. As a result, the attractive wake potential structure is destroyed in the ion flow direction. The horizontal interaction involves only Debye–Hückel potential.

• OSTI ID: 22599175
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 4 Vol. 23; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
COLLISIONS
CYCLOTRON FREQUENCY
CYCLOTRONS
DEBYE LENGTH
DIELECTRIC MATERIALS
DUSTS
FOCUSING
INTERACTIONS
IONS
MAGNETIC FIELDS
PARTICLES
PLASMA
POTENTIALS
RESPONSE FUNCTIONS