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Descripción
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| The comprehension of the phenomena involved in plasma thrusters devices, where ions can be accelerated to high velocities, is of relevant importance to improve the efficiency and designing of these engines, as well as to ensure a correct interpretation of plasma diagnostics measurements [1,2]. Usually, fluid model equations mislead upscaling diffusive kinetic effects that remains to mesoscopic or fluid scales. We present an extension of the previously stated one-dimensional collisional velocity-space kinetic model [3,4], for weakly ionized plasmas, to describe a plasma plume column in physical space. We propose a slabbing model to compute the transient ion distribution function by including elastic collisions and charge-exchange contributions. The plasma is spatially sectioned into a set of contiguous interconnected slabs, transversal to the direction of the flows carried from the ionization chamber to the exhaust area. For each plasma slab, the kinetic nonlinear equation is solved by the semi-analytical stable Integral Propagator Method, which allows the computation of the non-local energy and mass flows of the analysed plasma species. This firstly offered global kinetic treatment does not require the local thermodynamic equilibrium hypothesis and it establishes a feasible tool able to detect and describe phenomena, as the merging of two distinguishable ions populations with high and low energy, in accordance to several experimental results | |
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Internacional
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Si |
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Nombre congreso
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12th International Workshop on Electric Probes in Magnetized Plasmas IWEP2017 |
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Tipo de participación
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960 |
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Lugar del congreso
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Naklo, Slovenija, Eslovenia |
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Revisores
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Si |
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ISBN o ISSN
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978-961-6207-41-6 |
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DOI
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Fecha inicio congreso
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04/09/2017 |
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Fecha fin congreso
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07/09/2017 |
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Desde la página
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1051 |
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Hasta la página
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1052 |
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Título de las actas
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Book of Abstracts 12th International Workshop on Electric Probes in Magnetized Plasmas 2017 |