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Optical thickness corrections to ECE measurement of electron temperature in IR-T1 tokamak

Published online by Cambridge University Press:  26 November 2012

MONA AHMADI ,
PEJMAN KHORSHID  and
OMID JALILI
MONA AHMADI
Affiliation:
Department of Physics, Mashhad Branch, Islamic Azad University, Mashhad, Iran (khorshid@mshdiau.ac.ir)
PEJMAN KHORSHID
Affiliation:
Department of Physics, Mashhad Branch, Islamic Azad University, Mashhad, Iran (khorshid@mshdiau.ac.ir)
OMID JALILI
Affiliation:
Department of Physics, Noor Branch, Islamic Azad University, Noor, Iran
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Abstract

The Electron Cyclotron Emission (ECE) radiation has been investigated, passing through plasma column with concerning absorption effect on the IR-T1 tokamak. The intensity of second harmonic X-mode is used to investigate changes in electron temperature profile. The results show that radiation temperature (Trad) detected outside the plasma column is less than the electron temperature (Te) in the core. The radiation temperature can be directly interpreted as Te to about 3–10% reduction. This implies that optical thickness and electron density effects are more considerable at lower temperatures.

Type
Papers
Information
Journal of Plasma Physics , Volume 79 , Issue 3 , June 2013 , pp. 311 - 314
Copyright
Copyright © Cambridge University Press 2012 

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