Magnetic shielding of a laboratory Hall thruster. II. Experiments

Hofer, Richard R.; Goebel, Dan M.; Mikellides, Ioannis G.; Katz, Ira

doi:10.1063/1.4862314

Cited by 146 publications

(136 citation statements)

References 22 publications

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“…The design of this so-called magnetic lens is indeed a crucial part of Hall thruster design, as demonstrated by recent studies on magnetically shielded thrusters. 17 The electron kinetic state retained by GC models is ideally suited to study magnetic confinement of plasma as it provides an accurate estimate of the magnetic mirror force due to electron temperature anisotropy. It also accounts for temperature gradients along magnetic field lines.…”

Section: A Overview and Main Assumptionsmentioning

confidence: 99%

Influence of oblique magnetic field on electron cross-field transport in a Hall effect thruster

Miedzik

Barral²,

Daniłko

2015

Physics of Plasmas

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The effects of the inclination of the magnetic field with respect to the channel walls in a Hall effect thruster are numerically studied with the use of a one-dimensional quasi-neutral Particle-In-Cell model with guiding center approximation of electron motion along magnetic lines. Parametric studies suggest that the incidence angle strongly influences electron transport across the magnetic field. In ion-focusing magnetic topologies, electrons collide predominantly on the side of the magnetic flux tube closer to the anode, thus increasing the electron cross-field drift. The opposite effect is observed in ion-defocussing topology. V C 2015 AIP Publishing LLC.

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Section: A Overview and Main Assumptionsmentioning

confidence: 99%

Influence of oblique magnetic field on electron cross-field transport in a Hall effect thruster

Miedzik

Barral²,

Daniłko

2015

Physics of Plasmas

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“…After the pioneering work of Maxwell-Garnett, 8 new effective medium approximations have been formulated in order to incorporate different types of effects which were not considered in this earlier approach. 9 These include, for example, cases of high concentration of the metal particles; 10 the distribution of sizes and shapes of the inclusions at different levels of approximation; [11][12][13][14][15][16][17][18][19] generalization to an anisotropic effective dielectric response for the composite; 20 implication of the significance of multipolar response which is neglected in the standard effective medium approximation; [21][22][23][24][25][26] and generalization to small metallic spheres of two different sizes. 27 In most of the previous effective medium approximations, the dielectric response of the metallic particles is usually limited to include only temporal dispersion with the dielectric function to have only frequency dependence.…”

Section: Introductionmentioning

confidence: 99%

Maxwell-Garnett effective medium theory: Quantum nonlocal effects

Moradi

2015

Physics of Plasmas

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We develop the Maxwell-Garnett theory for the effective medium approximation of composite materials with metallic nanoparticles by taking into account the quantum spatial dispersion effects in dielectric response of nanoparticles. We derive a quantum nonlocal generalization of the standard Maxwell-Garnett formula, by means the linearized quantum hydrodynamic theory in conjunction with the Poisson equation as well as the appropriate additional quantum boundary conditions. V C 2015 AIP Publishing LLC. [http://dx.

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“…Numerous studies are aimed at improving performance and capabilities. For instance, the development of the Hall thruster configuration termed 'magnetic shielding' has led to a drastic improvement in thruster lifetimes [115,116]. Likewise, the wall-less configuration may potentially provide a means for reducing the wear of the Hall thruster assembly [115].…”

Section: Electric Propulsionmentioning

confidence: 99%