Three-Dimensional Neutral Transport Simulations of Gas Puff Imaging Experiments

Autor:	B. LeBlanc, R. J. Maqueda, S. A. Sabbagh, S. J. Zweben, James Myra, D. A. D'Ippolito, D. P. Stotler
Rok vydání:	2004
Předmět:	Physics Electron density Plane (geometry) Resolution (electron density) Monte Carlo method Magnetic confinement fusion Plasma diagnostics Plasma Atomic physics Condensed Matter Physics Computational physics Magnetic field
Zdroj:	Contributions to Plasma Physics. 44:294-300
ISSN:	1521-3986 0863-1042
Popis:	Gas Puff Imaging (GPI) experiments are designed to isolate the structure of plasma turbulence in the plane perpendicular to the magnetic field. Three-dimensional aspects of this diagnostic technique as used on the National Spherical Torus eXperiment (NSTX) are examined via Monte Carlo neutral transport simulations. The radial width of the simulated GPI images are in rough agreement with observations. However, the simulated emission clouds are angled approximately 15 degrees with respect to the experimental images. The simulations indicate that the finite extent of the gas puff along the viewing direction does not significantly degrade the radial resolution of the diagnostic. These simulations also yield effective neutral density data that can be used in an approximate attempt to infer two-dimensional electron density and temperature profiles from the experimental images.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f375e16e0d3dd9b7cce0e1a37d622b33 https://doi.org/10.1002/ctpp.200410045 Zobrazit plný text záznamu Plný text