Article Dans Une Revue Physics of Plasmas Année : 2009

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

Résumé

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.

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Dates et versions

hal-01551021 , version 1 (29-06-2017)

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Sedina Tsikata, N. Lemoine, V. Pisarev, D. Grésillon. Dispersion relations of electron density fluctuations in a Hall thruster plasma, observed by collective light scattering. Physics of Plasmas, 2009, 16, pp.033506. ⟨10.1063/1.3093261⟩. ⟨hal-01551021⟩
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