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

Tsikata, Sédina; Lemoine, N.; Pisarev, V.; Grésillon, D.

doi:10.1063/1.3093261

Cited by 100 publications

(98 citation statements)

References 21 publications

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“…The simulations were successful from that point of view. Recent experiments using collective Thomson scattering have confirmed the existence of this instability [6][7][8][9] immediately at the exit of the thruster.…”

Section: Introductionmentioning

confidence: 74%

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Anomalous conductivity in Hall thrusters: Effects of the non-linear coupling of the electron-cyclotron drift instability with secondary electron emission of the walls

Héron

Adam

2013

Physics of Plasmas

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With the help of an implicit particle-in-cell code, we have shown in a previous paper that the electron-cyclotron drift instability was able to induce anomalous conductivity as well as anomalous heating. As such it can be a major actor among the mechanisms involved in the operation of Hall thrusters. However, experimental results show that the nature of wall material has a significant effect on the behavior of the thruster. The purpose of this paper is to study the plasma-wall interaction in the case where the plasma is heated self-consistently by electrostatic fluctuations induced by the electron-cyclotron drift instability. V C 2013 AIP Publishing LLC.

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Section: Introductionmentioning

confidence: 74%

“…The group velocity of the perturbations is on the order of 4000-5000 m/s, which corresponds to the value obtained theoretically from the dispersion relation of the electroncyclotron drift instability and measured experimentally. [6][7][8] …”

Section: Results Of the 2d (Rh) Codementioning

confidence: 98%

Anomalous conductivity in Hall thrusters: Effects of the non-linear coupling of the electron-cyclotron drift instability with secondary electron emission of the walls

Héron

Adam

2013

Physics of Plasmas

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“…VII of Ref. 17. However, it will be assumed that for the values of a that contribute significantly to the convolution in da,…”

Section: B Dynamic Form Factormentioning

confidence: 99%

“…13 Wave type fluctuations have been observed on a 5 kW Hall thruster with a defined dispersion relation. 17 Two main modes were identified. The first one, named the E Â B in Ref.…”

mentioning

confidence: 99%

“…1,6,10,18 Micro-turbulence at the millimeter scale has been observed in PIC code simulations, 1,3 predicted by linear kinetic theory 5 and observed experimentally by the collective light scattering technique. 16,17 The collective light scattering technique, used together with a superheterodyne demodulation device, makes it possible to measure the spatial Fourier transform of electron density fluctuations. 13 Wave type fluctuations have been observed on a 5 kW Hall thruster with a defined dispersion relation.…”

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confidence: 99%

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Device convolution effects on the collective scattering signal of the E × B mode from Hall thruster experiments: 2D dispersion relation

et al. 2012

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The effect of the collective light scattering diagnostic transfer function is considered in the context of the dispersion relation of the unstable E Â B mode previously reported. This transfer function is found to have a contribution to the measured frequencies and mode amplitudes which is more or less significant depending on the measurement wavenumbers and angles. After deconvolution, the experimental data are found to be possibly compatible with the idea that the mode frequency in the jet frame (after subtraction of the Doppler effect due to the plasma motion along the thruster axis) is independent of the orientation of the wave vector in the plane orthogonal to the local magnetic field. V C 2012 American Institute of Physics. [http://dx.

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Collective Light Scattering for the Study of Fluctuations in Magnetized Plasmas: The Hall Thruster Case Study

Tsikata

Honoré

Grésilon

et al. 2011

Contrib. Plasma Phys.

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International audienceCollective light scattering (CLS) has been recently extended to the observation of Hall effect thruster plasmas. A better understanding of the physics of Hall thrusters is key to improving thruster operation and lifetimes. In particular, the origins of thruster phenomena such as anomalous electron transport need to be determined. A high-performance CLS diagnostic has therefore been developed for identifying and measuring electron density fluctuations in the thruster, at millimetric length scales and MHz frequencies. Such modes are believed to play a role in anomalous transport, and experiments so far performed have provided information on their dispersion relations, amplitude and directivity. This work describes the technical aspects of the optical bench and the range of accessible experiments (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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

Cited by 100 publications

References 21 publications

Anomalous conductivity in Hall thrusters: Effects of the non-linear coupling of the electron-cyclotron drift instability with secondary electron emission of the walls

Anomalous conductivity in Hall thrusters: Effects of the non-linear coupling of the electron-cyclotron drift instability with secondary electron emission of the walls

Device convolution effects on the collective scattering signal of the E × B mode from Hall thruster experiments: 2D dispersion relation

Collective Light Scattering for the Study of Fluctuations in Magnetized Plasmas: The Hall Thruster Case Study

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