Density measurements using coherence imaging spectroscopy based on Stark broadening
Date
2010-10-19
Authors
Lischtschenko, O.
Bystrov, K.
De Temmerman, G.
Howard, J.
Jaspers, R. J. E.
König, R.
Journal Title
Journal ISSN
Volume Title
Publisher
American Institute of Physics (AIP)
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(γ) 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.
Description
Keywords
Keywords: Abel inversion; Axial magnetic field; Cascaded arc; Coherence imaging; Density Measurements; Electron densities; Electron density profiles; Independent measurement; Instrument setup; Interferometric fringes; Local density; Proof of principles; Stark broad
Citation
Collections
Source
Review of Scientific Instruments
Type
Journal article
Book Title
Entity type
Access Statement
License Rights
Restricted until
Downloads
File
Description
Published Version