Dispersion relations of electron density fluctuations in a Hall thruster plasma, observed by collective light scattering

Kinetic models and numerical simulations of E ⃗ × B ⃗ plasma discharges predict microfluctuations at the scales of the electron cyclotron drift radius and the ion plasma frequency. With the help of a specially designed collective scattering device, the first experimental observations of small-scale...

Full description

Saved in:
Bibliographic Details
Published in:Physics of plasmas 2009-03, Vol.16 (3), p.033506-033506-10
Main Authors: Tsikata, S., Lemoine, N., Pisarev, V., Grésillon, D. M.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
ANISOTROPY
DISPERSION RELATIONS
ELECTRON DENSITY
FLUCTUATIONS
FORM FACTORS
LIGHT SCATTERING
Physics
Plasma Physics
PLASMA SIMULATION
SPATIAL DISTRIBUTION
THRUSTERS
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Kinetic models and numerical simulations of E ⃗ × B ⃗ plasma discharges predict microfluctuations at the scales of the electron cyclotron drift radius and the ion plasma frequency. With the help of a specially designed collective scattering device, the first experimental observations of small-scale electron density fluctuations inside the plasma volume are obtained, and observed in the expected ranges of spatial and time scales. The anisotropy, dispersion relations, form factor, amplitude, and spatial distribution of these electron density fluctuations are described and compared to theoretical expectations.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.3093261