Modeling of Stark‐Broadened Lines in a Fluctuating Edge Plasma. Issue 4 (June 2014)

• Record Type: Journal Article
• Authors: Rosato, J.; Marandet, Y.; Peiffer, A.; Capes, H.; Godbert‐Mouret, L.; Koubiti, M.; Stamm, R.
• Is Part Of: Contributions to plasma physics. Volume 54:Issue 4/6(2014)
• Page Start: 565
• Page End: 569
• Publication Date: 2014-06
• Subjects: Plasma (Ionized gases) -- Periodicals; Electronic journals; 530.44
• DOI: 10.1002/ctpp.201410045
• Languages: English
• ISSNs: 0863-1042

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>A line shape model that accounts for low‐frequency fluctuations is applied to the Balmer series of the hydrogen isotopes (atomic transitions <italic>n</italic> → 2). The plasma fluid parameters (density, temperature, etc.) are described as random variables characterized by a prescribed joint probability density function. A special emphasis is devoted to Stark broadened lines, which are sensitive to the plasma density. It is shown that fluctuations can lead to a significant increase of the line width if the fluctuation level Δ<italic>N</italic>_{<italic>e</italic>}/〈<italic>N</italic>_{<italic>e</italic>}〉 (with 〈<italic>N</italic>_{<italic>e</italic>}〉 and Δ<italic>N</italic>_{<italic>e</italic>} being respectively the density averaged along the line‐of‐sight and its RMS value) is large. (© 2014 WILEY‐VCH Verlag GmbH &amp; Co. KGaA, Weinheim)</p> </abstract>