Tallents, Gregory John orcid.org/0000-0002-1409-105X, Wilson, Sarah Arabella orcid.org/0000-0001-5914-5085, Wagenaars, Erik orcid.org/0000-0002-5493-3434 et al. (2 more authors) (2018) Plasma temperature measurements using black-body radiation from spectral lines emitted by a capillary discharge. Journal of Quantitative Spectroscopy and Radiative Transfer. ISSN 0022-4073
Abstract
Optically thick spectral line emssion from plasmas is often difficult to use for the diagnosis of plasma parameters. We demonstrate a technique for temperature measurement using the peak intensity of optically thick lines as their intensities approach a black-body distribution. Recording optical emission in the wavelength range 300 - 1000 nm from a plasma formed by radio-frequency heating and electrical discharges in a 0.2 m long capillary plasma, we show that the high wavelength Rayleigh-Jeans form of the black-body emission can be fitted to the most intense spectral lines to give a measurement of plasma temperatures in the 1 - 1.5 eV range. The temperature measurement technique should have wider applicability in diagnosing plasmas with optically thick spectral lines.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 Elsevier Ltd. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 10 Sep 2018 14:10 |
Last Modified: | 21 Jan 2025 17:35 |
Published Version: | https://doi.org/10.1016/j.jqsrt.2018.09.005 |
Status: | Published online |
Refereed: | Yes |
Identification Number: | 10.1016/j.jqsrt.2018.09.005 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:135534 |
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