Density measurements using coherence imaging spectroscopy based on Stark broadening

TitleDensity measurements using coherence imaging spectroscopy based on Stark broadening
Publication TypeJournal Article
Year of Publication2010
AuthorsO. Lischtschenko, K. Bystrov, G. De Temmerman, J. Howard, R.JE Jaspers, R. Konig
JournalReview of Scientific Instruments
Volume81
Number10
Pagination4
Date PublishedOct
Type of ArticleProceedings Paper
ISBN Number0034-6748
Accession NumberISI:000283754000248
Abstract

A coherence imaging camera has been set up at Pilot-PSI. The system is to be used for imaging the plasma density through the Stark effect broadening of the H-gamma line. Local density values are then obtained by the Abel inversion of the measured interferometric fringe contrast. This report will present the instrument setup and proof-of-principle demonstration. The inverted spatial electron density profiles obtained near the cascaded arc source of Pilot-PSI in discharges with axial magnetic field of B=0.4 T are compared with an independent measurement of electron density by Thomson scattering and good agreement is found. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3490023]

URL<Go to ISI>://000283754000248
Division

PSI

PID

6e7b8dea74eceb6a2fb75aca9d7d87b4

Alternate TitleRev. Sci. Instrum.

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