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

Cavalier, J.; Lemoine, N.; Bonhomme, Gérard; Tsikata, Sédina; Honoré, Cyrille; Grésillon, D.

doi:10.1063/1.4748286

Cited by 5 publications

(4 citation statements)

References 19 publications

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“…These assumptions are consistent with the experimental results as shown in Ref. 4 and are also consistent with the numerical study of the mode performed in Sec. V where it has been shown that the Doppler effect provides the dominant contribution to the angular frequencies when a is varied.…”

Section: B Analytical Model Fitted To the Experimental Dispersion Resupporting

confidence: 88%

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Hall thruster plasma fluctuations identified as the E×B electron drift instability: Modeling and fitting on experimental data

et al. 2013

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Microturbulence has been implicated in anomalous transport at the exit of the Hall thruster, and recent simulations have shown the presence of an azimuthal wave which is believed to contribute to the electron axial mobility. In this paper, the 3D dispersion relation of this E Â B electron drift instability is numerically solved. The mode is found to resemble an ion acoustic mode for low values of the magnetic field, as long as a non-vanishing component of the wave vector along the magnetic field is considered, and as long as the drift velocity is small compared to the electron thermal velocity. In these conditions, an analytical model of the dispersion relation for the instability is obtained and is shown to adequately describe the mode obtained numerically. This model is then fitted on the experimental dispersion relation obtained from the plasma of a Hall thruster by the collective light scattering diagnostic. The observed frequency-wave vector dependences are found to be similar to the dispersion relation of linear theory, and the fit provides a non-invasive measurement of the electron temperature and density. V C 2013 AIP Publishing LLC.

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Section: B Analytical Model Fitted To the Experimental Dispersion Resupporting

confidence: 88%

“…a) Electronic address: jordan.cavalier@ijl.universite-nancy.fr. 4. electron dynamics are described using the Vlasov equation.…”

Section: Introductionmentioning

confidence: 99%

Hall thruster plasma fluctuations identified as the E×B electron drift instability: Modeling and fitting on experimental data

et al. 2013

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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%

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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“…The transition to a modified ion-acoustic instability has been experimentally investigated by Barrett et al [11] and analytically studied by Gary and Sanderson [10]. More recently, Cavalier et al [12][13] and Lafleur et al [14][15][16] have solved the dispersion relation for typical Hall thruster conditions.…”

Section: Introductionmentioning

confidence: 99%

Application of sparse grid combination techniques to low temperature plasmas Particle-In-Cell simulations. II. Electron drift instability in a Hall thruster

Garrigues

Montcel

Fubiani

et al. 2021

Journal of Applied Physics

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Three-dimensional simulations of partially magnetized plasma are real challenges that actually limit the understanding of the discharge operations such as the role of kinetic instabilities using explicit Particle-In-Cell (PIC) schemes. The transition to high performance computing cannot overcome all the limits inherent to very high plasma densities and thin mesh sizes employed to avoid numerical heating. We have applied a recent method proposed in the literature [L. F. Ricketson and A. J. Cerfon, Plasma Phys. Controlled Fusion 59, 024002 (2017)] to model low temperature plasmas. This new approach, namely, the sparse grid combination technique, offers a gain in computational time by solving the problem on a reduced number of grid cells, hence allowing also the reduction of the total number of macroparticles in the system. We have modeled the example of the two-dimensional electron drift instability, which was extensively studied in the literature to explain the anomalous electron transport in a Hall thruster. Comparisons between standard and sparse grid PIC methods show an encouraging gain in the computational time with an acceptable level of error. This method offers a unique opportunity for future three-dimensional simulations of instabilities in partially magnetized low temperature plasmas.

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

Cited by 5 publications

References 19 publications

Hall thruster plasma fluctuations identified as the E×B electron drift instability: Modeling and fitting on experimental data

Hall thruster plasma fluctuations identified as the E×B electron drift instability: Modeling and fitting on experimental data

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

Application of sparse grid combination techniques to low temperature plasmas Particle-In-Cell simulations. II. Electron drift instability in a Hall thruster

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