Validation of collisional radiative modelling of emission line ratios for helium beam plasma diagnostic
Date
2009
Authors
Collis, S
Dall, Robert
Howard, John
Andruczyk, D
James, Brian W
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Publisher
Pergamon-Elsevier Ltd
Abstract
A time-dependent collisional radiation model has been used to validate the use of a pulsed helium beam to measure electron temperature profiles in the H-1NF flexible heliac. The diagnostics technique is based on the measurement of helium spectral line ratios which are a strong function of electron temperature while being a weak function of electron density. The validation procedure involves comparing measured and calculated emissivities of spectral lines emitted by helium atoms as a function of position in the beam.
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Keywords
Keywords: Electromagnetic wave emission; Helium; Plasma diagnostics; Plasma probes; Radioactivity; Spectrum analysis; Collisional radiative model; Diagnostics techniques; Electron densities; Emission lines; Helium atoms; Radiation models; Spectral lines; Time depen Collisional radiative model; Electron temperature; Helium beam; Plasma diagnostic
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Source
Journal of Quantitative Spectroscopy & Radiative Transfer
Type
Journal article
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2037-12-31
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