Development of fast helium beam emission spectroscopy on MST

Ahn, J.-W. and Craig, D. and Fiksel, G. and Den Hartog, D.J. and Anderson, J.K. and O'Mullane, M.G. (2006) Development of fast helium beam emission spectroscopy on MST. Review of Scientific Instruments, 77 (10). 10F114. ISSN 0034-6748 (https://doi.org/10.1063/1.2236279)

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Abstract

Emission from an energetic neutral helium beam has been investigated as a potential localized diagnostic for the plasma parameters. A collisional-radiative model in atomic data and analysis structure was used to estimate evolutions of the atomic level populations in the beam and the beam emission intensities. It has been found that singlet lines are insensitive to the local metastable fraction and thus have been chosen to construct line ratios. The T-e and n(e) dependences of the ratios were investigated and some have been found to be sensitive to the density, but no ratios show significant sensitivity to the temperature in the range of interest for Madison symmetric torus. The theoretically expected line ratios are compared with the experimental results. It is shown that local density measurements may be possible using the singlet line ratio technique.

ORCID iDs

Ahn, J.-W., Craig, D., Fiksel, G., Den Hartog, D.J., Anderson, J.K. and O'Mullane, M.G. ORCID logoORCID: https://orcid.org/0000-0002-2160-4546;
  • Item type:Article
    ID code:31298
    Dates:
    Date
    Event
    1 October 2006
    Published
    Notes:16th Topical Conference on High-Temperature Plasma Diagnostics, Williamsburg, VA, MAY 07-11, 2006
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:13 Jul 2011 08:56
    Last modified:11 Nov 2024 09:45
    URI:https://strathprints.strath.ac.uk/id/eprint/31298
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