U.S. Department of EnergyOffice of Scientific and Technical Information
Inversion technique to obtain local ion temperature profiles for an axisymmetric plasma with toroidal and radial velocities
Abstract
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.
- Authors:
-
- Princeton University (PPPL)
- Publication Date:
- DOE Contract Number:
- AC02-09CH11466
- Research Org.:
- Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- Subject:
- ion temperature; magnetic reconnection; merging compression; plasma spectroscopy; radial velocity; tomographic inversion
- OSTI Identifier:
- 1814946
- DOI:
- https://doi.org/10.11578/1814946
Citation Formats
Bell, Ronald E. Inversion technique to obtain local ion temperature profiles for an axisymmetric plasma with toroidal and radial velocities. United States: N. p., 2021.
Web. doi:10.11578/1814946.
Bell, Ronald E. Inversion technique to obtain local ion temperature profiles for an axisymmetric plasma with toroidal and radial velocities. United States. doi:https://doi.org/10.11578/1814946
Bell, Ronald E. 2021.
"Inversion technique to obtain local ion temperature profiles for an axisymmetric plasma with toroidal and radial velocities". United States. doi:https://doi.org/10.11578/1814946. https://www.osti.gov/servlets/purl/1814946. Pub date:Fri Feb 26 04:00:00 UTC 2021
@article{osti_1814946,
title = {Inversion technique to obtain local ion temperature profiles for an axisymmetric plasma with toroidal and radial velocities},
author = {Bell, Ronald E},
abstractNote = {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.},
doi = {10.11578/1814946},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Feb 26 04:00:00 UTC 2021},
month = {Fri Feb 26 04:00:00 UTC 2021}
}