Density measurements using coherence imaging spectroscopy based on Stark broadening

O. Lischtschenko; K. Bystrov; G. De Temmerman; J. Howard; R. J.E. Jaspers; R. König

doi:10.1063/1.3490023

Density measurements using coherence imaging spectroscopy based on Stark broadening

O. Lischtschenko^*, K. Bystrov, G. De Temmerman, J. Howard, R. J.E. Jaspers, R. König

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

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.

Original language	English
Article number	10E521
Journal	Review of Scientific Instruments
Volume	81
Issue number	10
DOIs	https://doi.org/10.1063/1.3490023
Publication status	Published - Oct 2010

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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 Hγ 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.",

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AU - Lischtschenko, O.

AU - Bystrov, K.

AU - De Temmerman, G.

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AU - Jaspers, R. J.E.

AU - König, R.

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AB - 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 Hγ 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.

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Density measurements using coherence imaging spectroscopy based on Stark broadening

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