Electron temperature fluctuation measurements and techniques in the DIII-D tokamak

1997 ◽  
Vol 68 (1) ◽  
pp. 484-487 ◽  
Author(s):  
C. L. Rettig ◽  
W. A. Peebles ◽  
J. Lohr ◽  
M. E. Austin
Keyword(s):  
Electron Temperature ◽  
Temperature Fluctuation

A multi-channel correlation ECE system for electron temperature fluctuation measurement on EAST tokamak

2019 ◽  
Vol 149 ◽  
pp. 111336 ◽  
Author(s):  
Hailin Zhao ◽  
Tianfu Zhou ◽  
Yong Liu ◽  
Ang Ti ◽  
Bili Ling ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Temperature Fluctuation ◽  
Channel Correlation ◽  
Fluctuation Measurement

scholarly journals Development of a correlation ECE radiometer for electron temperature fluctuation measurements in Heliotron J

2019 ◽  
Vol 203 ◽  
pp. 03013
Author(s):  
Gavin M. Weir ◽  
Kazunobu Nagasaki ◽  
Jinxiang Zhu ◽  
Maoyuan Luo ◽  
Hiroyuki Okada ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Temperature Fluctuation ◽  
Dynamic Range ◽  
High Sensitivity ◽  
Intermediate Frequency ◽  
Local Oscillator ◽  
Heterodyne Detection ◽  
Helical Axis ◽  
Detection Systems ◽  
Heating Radiation

A radial correlation ECE radiometer diagnostic has been developed for electron temperature fluctuation measurements in the helical-axis heliotron device, Heliotron J. The radiometer consists of two heterodyne detection systems. One system scans the frequency of a local oscillator from 52 to 64 GHz with a single intermediate frequency filter, and the second system has a fixed frequency, 56 GHz local oscillator with four intermediate frequency filters. This frequency range covers measurement positions spanning from the plasma core to the half radius. Laboratory tests indicate that each system has narrow intermediate frequency bandwidth and high-sensitivity over a large dynamic range. During plasma experiments with NBI heating, radiation temperature fluctuation measured by the CECE radiometer decrease with increasing ECCD commensurate with previous measurements of energetic particle driven modes on Heliotron J.

Electron temperature fluctuation measurement from ECE on TEXT‐U

1992 ◽  
Vol 63 (10) ◽  
pp. 4633-4635 ◽  
Author(s):  
M. Kwon ◽  
R. F. Gandy ◽  
C. E. Thomas ◽  
W. K. Lim
Keyword(s):  
Electron Temperature ◽  
Temperature Fluctuation ◽  
Fluctuation Measurement

scholarly journals Evaluation of Edge Electron Temperature Fluctuation by the Use of Fast Voltage Scanning Method on TST-2

2011 ◽  
Vol 6 ◽  
pp. 2402036-2402036 ◽  
Author(s):  
Yoshihiko NAGASHIMA ◽  
Akira EJIRI ◽  
Yuichi TAKASE ◽  
Masateru SONEHARA ◽  
Hidetoshi KAKUDA ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Temperature Fluctuation ◽  
Scanning Method ◽  
Voltage Scanning

scholarly journals Temperature Fluctuations in PN

1993 ◽  
Vol 155 ◽  
pp. 188-188
Author(s):  
Ruth Gruenwald ◽  
Sueli M. Viegas
Keyword(s):  
Electron Temperature ◽  
Observational Data ◽  
Electron Density ◽  
Temperature Fluctuation ◽  
Planetary Nebulae ◽  
Temperature Fluctuations ◽  
Emission Lines ◽  
Mean Square ◽  
The Mean

For planetary nebulae, empirical abundances can be obtained from the observed emission-lines as long as the electron density, the electron temperature, and the ionization corrections factor are determined. However, due to temperature fluctuations in the emitting gas, the evaluation of the temperature from the observational data is strongly dependent on the method used. The temperature fluctuation is usually characterized by the mean square temperature fluctuation, t2 (Peimbert and Costero, 1969 — PC).

Electron temperature fluctuation measurements with high temporal resolution in the TEXTOR boundary plasma

1993 ◽  
Vol 173 (3) ◽  
pp. 288-292 ◽  
Author(s):  
R.S. Ivanov ◽  
A.N. Chernilevsky ◽  
U. Samm ◽  
R. van Nieuwenhove ◽  
G. von Oost
Keyword(s):  
Electron Temperature ◽  
Temporal Resolution ◽  
Temperature Fluctuation ◽  
High Temporal Resolution ◽  
Boundary Plasma
Sign in / Sign up

Export Citation Format

Share Document