Abstract
The study of electron cyclotron emission (ECE) at frequencies for which the plasma is optically thin may give information on electron density of thermal plasmas or may help to identify and diagnose suprathermal electrons. In addition, finite optical thickness may give rise to systematic errors in the standard measurement of electron temperature, at least near the plasma edge, such that boundaries in plasma parameters for a reliable temperature measurement should be identified. This paper presents the results obtained on the FTU (Frascati Tokamak Upgrade) (major radius =0.935 m; limiter radius =0.3 m; central toroidal magnetic field {<=} 8 T) by means of an absolutely calibrated Fourier transform spectrometer with a time resolution of 5 ms and a spatial resolution of 0.03 m. Only ohmically heated thermal plasmas are considered; data on suprathermal electron cyclotron emission are sparse at the moment and will be analyzed in future work.
Citation Formats
Buratti, P, and Zerbini, M.
Density measurements in FTU from electron cyclotron emission.
Italy: N. p.,
1992.
Web.
Buratti, P, & Zerbini, M.
Density measurements in FTU from electron cyclotron emission.
Italy.
Buratti, P, and Zerbini, M.
1992.
"Density measurements in FTU from electron cyclotron emission."
Italy.
@misc{etde_10130498,
title = {Density measurements in FTU from electron cyclotron emission}
author = {Buratti, P, and Zerbini, M}
abstractNote = {The study of electron cyclotron emission (ECE) at frequencies for which the plasma is optically thin may give information on electron density of thermal plasmas or may help to identify and diagnose suprathermal electrons. In addition, finite optical thickness may give rise to systematic errors in the standard measurement of electron temperature, at least near the plasma edge, such that boundaries in plasma parameters for a reliable temperature measurement should be identified. This paper presents the results obtained on the FTU (Frascati Tokamak Upgrade) (major radius =0.935 m; limiter radius =0.3 m; central toroidal magnetic field {<=} 8 T) by means of an absolutely calibrated Fourier transform spectrometer with a time resolution of 5 ms and a spatial resolution of 0.03 m. Only ohmically heated thermal plasmas are considered; data on suprathermal electron cyclotron emission are sparse at the moment and will be analyzed in future work.}
place = {Italy}
year = {1992}
month = {Dec}
}
title = {Density measurements in FTU from electron cyclotron emission}
author = {Buratti, P, and Zerbini, M}
abstractNote = {The study of electron cyclotron emission (ECE) at frequencies for which the plasma is optically thin may give information on electron density of thermal plasmas or may help to identify and diagnose suprathermal electrons. In addition, finite optical thickness may give rise to systematic errors in the standard measurement of electron temperature, at least near the plasma edge, such that boundaries in plasma parameters for a reliable temperature measurement should be identified. This paper presents the results obtained on the FTU (Frascati Tokamak Upgrade) (major radius =0.935 m; limiter radius =0.3 m; central toroidal magnetic field {<=} 8 T) by means of an absolutely calibrated Fourier transform spectrometer with a time resolution of 5 ms and a spatial resolution of 0.03 m. Only ohmically heated thermal plasmas are considered; data on suprathermal electron cyclotron emission are sparse at the moment and will be analyzed in future work.}
place = {Italy}
year = {1992}
month = {Dec}
}