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Title: Ion dynamics in an E × B Hall plasma accelerator

We show the time evolution of the ion velocity distribution function in a Hall plasma accelerator during a 20 kHz natural, quasi-periodic plasma oscillation. We apply a time-synchronized laser induced fluorescence technique at different locations along the channel midline, obtaining time- and spatially resolved ion velocity measurements. Strong velocity and density fluctuations and multiple ion populations are observed throughout the so-called “breathing mode” ionization instability, opening an experimental window into the detailed ion dynamics and physical processes at the heart of such devices.
Authors:
; ;  [1]
  1. Stanford Plasma Physics Laboratory, 452 Escondido Mall, Bldg. 520-257, Stanford, California 94305 (United States)
Publication Date:
OSTI Identifier:
22415216
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 4; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DISTRIBUTION FUNCTIONS; FLUORESCENCE; HALL EFFECT; IONS; LASERS; PLASMA ACCELERATION; PLASMA GUNS; PLASMA WAVES