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Updated: Aug 19, 2026

Applying X-ray Imaging Crystal Spectroscopy for Use as a High Temperature Plasma Diagnostic
Published on: August 25, 2016
Variation in Lyman-alpha fine structure components for Cl XVII during a tokamak plasma shot
J M A Ashbourn1, P McGinnity, N J Peacock
1Clare Hall, University of Cambridge, Cambridge CB3 9AL, England. J.MA.Ashbourn@damtp.cam.ac.uk
Abstract:
In this Brief Report we study the measured and modeled Lyman-alpha intensity ratios for hydrogenlike Cl XVII in a deuterium base plasma in the Joint European Torus tokamak and examine the agreement between experiment and theory for a particular plasma shot. A collisional-radiative model is used to calculate the values of the intensity ratios using measured plasma parameters for comparison with line-of-sight values. When variations in the electron parameters during the discharge are taken into account, the variations in the modeled values are seen to follow the experimental data. The difference between the values of observed and modeled intensity ratios is discussed.
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