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The role of Ar III in quantitative spectroscopy on hot argon plasmas

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Kühn,  Gerrit
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Kock,  Manfred
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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293717.pdf
(Publisher version), 232KB

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Citation

Kühn, G., Könemann, F., & Kock, M. (2007). The role of Ar III in quantitative spectroscopy on hot argon plasmas. Journal of Quantitative Spectroscopy Radiative Transfer, 105, 102-110. Retrieved from http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TVR-4M4KJ24-2&_user=42783&_coverDate=05%2F31%2F2007&_alid=590138280&_rdoc=1&_fmt=summary&_orig=search&_cdi=5541&_sort=d&_docanchor=&view=c&_ct=1&_acct=C000003518&_version=1&_urlVersion=0&_userid=42783&md5=51483f1f850ef79f35848fa38f00ef0c.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-48F2-9
Abstract
We perform quantitative optical emission spectroscopy on the hot core of the cathode region of a free-burning arc in argon under atmospheric pressure. As the peak temperatures in the centre of the discharge exceed 22 000 K we are able to observe three spectra of argon (Ar I, Ar II and Ar III) and the continuum emission. We report on some inconsistencies concerning the evaluation of Ar III radiation in both line and continuum emission. These are caused by erroneous data in the literature and common misconceptions about the influence of Ar III on the plasma emission. We discuss the impact of this fact on published data.