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  A spatially resolved relaxation method for pLTE plasma diagnostics in free-burning arcs

Kühn, G., & Kock, M. (2006). A spatially resolved relaxation method for pLTE plasma diagnostics in free-burning arcs. Journal of Physics D, 39(11), 2401-2414. Retrieved from http://www.iop.org/EJ/abstract/0022-3727/39/11/014.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4C45-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-4C46-F
Genre: Journal Article

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d6_11_014.pdf (Preprint), 949KB
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 Creators:
Kühn, Gerrit1, Author              
Kock, Manfred1, Author              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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 Abstract: We report on a relaxation method to determine the electron-to-gas temperature ratio in the near-cathode region of a low-current free-burning arc operated in argon under atmospheric pressure. We used an intensified CCD camera to record the relaxation process after a fast power-interruption of the discharge with a time resolution better than 1 µs. For the CCD images we applied an ABEL inversion procedure yielding 3D information about the temperature ratio ? := Te/Tg with a spatial resolution of 50 µm. We deduced spatially resolved values of ? from the relaxation experiment using independently measured values of Te and ne, so we could determine all free parameters in the partial LTE model.

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Language(s): eng - English
 Dates: 2006
 Publication Status: Published in print
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Title: Journal of Physics D
Source Genre: Journal
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Pages: - Volume / Issue: 39 (11) Sequence Number: - Start / End Page: 2401 - 2414 Identifier: -