Inversion technique to obtain local ion temperature profiles for an axisymmetric plasma with toroidal and radial velocities

Autor:	Ronald E. Bell
Rok vydání:	2021
Předmět:	Radial velocity Toroid Materials science Nuclear Energy and Engineering Plasma spectroscopy Physics::Plasma Physics Rotational symmetry Magnetic reconnection Ion temperature Plasma Condensed Matter Physics Inversion (discrete mathematics) Computational physics
Zdroj:	Plasma Physics and Controlled Fusion. 63:045023
ISSN:	1361-6587 0741-3335
DOI:	10.1088/1361-6587/abe911
Popis:	A matrix inversion technique is derived to calculate local ion temperature from line-integrated measurements of an extended emission source in an axisymmetric plasma which exactly corrects for both toroidal velocity and radial velocity components. Local emissivity and toroidal velocity can be directly recovered from line-integrated spectroscopic measurements, but an independent measurement of the radial velocity is necessary to complete the temperature inversion. The extension of this technique to handle the radial velocity is relevant for magnetic reconnection and merging compression devices where temperature inversion from spectroscopic measurements is desired. A simulation demonstrates the effects of radial velocity on the determination of ion temperature.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1fcebc15dd0af8ce8a40d3f1e252af27 https://doi.org/10.1088/1361-6587/abe911 Zobrazit plný text záznamu