Rotation of a strongly magnetized hydrogen plasma column determined from an asymmetric Balmer-beta spectral line with two radiating distributions

TitleRotation of a strongly magnetized hydrogen plasma column determined from an asymmetric Balmer-beta spectral line with two radiating distributions
Publication TypeJournal Article
Year of Publication2008
AuthorsA.E Shumack, V.P Veremiyenko, D.C. Schram, H.J de Blank, W.J Goedheer, H.J van der Meiden, W.AJ Vijvers, J. Westerhout, N.J Cardozo, G.J van Rooij
JournalPhysical Review E
Volume78
Issue4
Pagination11
Date PublishedOct
Type of ArticleArticle
ISBN Number1539-3755
KeywordsBALANCE, EXCITATION, GENERATOR, ITER, LOW-ENERGY, MOLECULAR ACTIVATED RECOMBINATION, surface
Abstract

A potential buildup in front of a magnetized cascaded arc hydrogen plasma source is explored via ExB rotation and plate potential measurements. Plasma rotation approaches thermal speeds with maximum velocities of 10 km/s. The diagnostic for plasma rotation is optical emission spectroscopy on the Balmer-beta line. Asymmetric spectra are observed. A detailed consideration is given on the interpretation of such spectra with a two distribution model. This consideration includes radial dependence of emission determined by Abel inversion of the lateral intensity profile. Spectrum analysis is performed considering Doppler shift, Doppler broadening, Stark broadening, and Stark splitting.

DOI10.1103/PhysRevE.78.046405
Division

Fusion Physics

Department

CPP-HT

PID

044c428f094c23fb72cc93dd6d3af111

Alternate TitlePhys. Rev. E

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