Electron Temperature and Density Measurements by the Unicity of Particle Confinement Time on the TCABR Tokamak

The electron temperature Te and density ne at inner border side of plasma on TCABR tokamak are determined using the unicity of particle confinement time p. In this method, the signals from hydrogen Balmer series emissions like H alfa, beta and gama are measured with an absolutely intensity calibrate...

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Bibliographic Details
Main Authors: MacHida, M, Nascimento, I C, Daltrini, A M, Severo, J H F, Sanada, E K, Galvao, R M O
Format: Conference Proceeding
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BOUNDARY LAYERS
CONFINEMENT TIME
ELECTRON DENSITY
ELECTRON TEMPERATURE
PLASMA
PLASMA CONFINEMENT
PLASMA DENSITY
PLASMA DIAGNOSTICS
TCABR TOKAMAK
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Summary:The electron temperature Te and density ne at inner border side of plasma on TCABR tokamak are determined using the unicity of particle confinement time p. In this method, the signals from hydrogen Balmer series emissions like H alfa, beta and gama are measured with an absolutely intensity calibrated spectrometer during the discharge and the particle confinement time then is evaluated using these three emissions for large range of electron temperature and density, until the unique value of p is achieved. The results show that during the current plateau, the values of the edge electron density and temperature in high fill density discharge, present much strong variations compared to the low fill pressure because of larger edge turbulence activity.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.2405917