A study on the modification of density and plasma potential in presence of electron temperature fluctuations (abstract)

2001 ◽  
Vol 72 (1) ◽  
pp. 465-465
Author(s):  
C. Riccardi ◽  
G. Longoni ◽  
G. Chiodini ◽  
M. Fontanesi
Keyword(s):  
Electron Temperature ◽  
Temperature Fluctuations ◽  
Plasma Potential

Measurement of potential variations in a dense oscillating plasma

1970 ◽  
Vol 48 (7) ◽  
pp. 918-921 ◽  
Author(s):  
Z. Zakrzewski ◽  
C. Beaudry ◽  
G. G. Cloutier
Keyword(s):  
Electron Temperature ◽  
Electric Fields ◽  
Temperature Fluctuations ◽  
Plasma Potential ◽  
Floating Potential ◽  
Reflex Discharge

When temperature fluctuations are large in a plasma, the floating potential cannot be used to calculate electric fields. This note describes a method which allows the calculation of the plasma potential as a function of time from measured values of the electron temperature and the floating potential. An application of this technique to the evaluation of electric fields in a reflex discharge is briefly outlined.

scholarly journals Observation of a Critical Gradient Threshold for Electron Temperature Fluctuations in the DIII-D Tokamak

2013 ◽  
Vol 110 (4) ◽  
Author(s):  
J. C. Hillesheim ◽  
J. C. DeBoo ◽  
W. A. Peebles ◽  
T. A. Carter ◽  
G. Wang ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Temperature Fluctuations

scholarly journals Effect of the gas puff location on the divertor plasma properties in COMPASS tokamak

2020 ◽  
Vol 1492 (1) ◽  
pp. 012003
Author(s):  
M Dimitrova ◽  
M Tomes ◽  
Tsv Popov ◽  
R Dejarnac ◽  
J Stockel ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Vacuum Chamber ◽  
Plasma Potential ◽  
Saturation Current ◽  
Langmuir Probes ◽  
Plasma Parameters ◽  
Plasma Properties ◽  
Low Field ◽  
Saturation Current Density ◽  
Deuterium Gas

Abstract Langmuir probes are used to study the plasma parameters in the divertor during deuterium gas puff injection on the high- (HFS) or low-field sides (LFS). The probe data were processed to evaluate the plasma potential and the electron temperatures and densities. A difference was found in the plasma parameters depending on the gas puff location. In the case of a gas puff on the LFS, the plasma parameters changed vastly, mainly in the inner divertor – the plasma potential, the ion saturation-current density and the electron temperature dropped. After the gas puff, the electron temperature changed from 10-15 eV down to within the 5-9 eV range. As a result, the parallel heat-flux density decreased. At the same time, in the outer divertor the plasma parameters remained the same. We thus concluded that using a gas puff on the LFS will facilitate reaching a detachment regime by increasing the density of puffed neutrals. When the deuterium gas puff was on the HFS, the plasma parameters in the divertor region remained almost the same before and during the puff. The electron temperature decreased with just few eV as a result of the increased amount of gas in the vacuum chamber.

scholarly journals Quantitative comparison of electron temperature fluctuations to nonlinear gyrokinetic simulations in C-Mod Ohmic L-mode discharges

2016 ◽  
Vol 23 (4) ◽  
pp. 042303 ◽  
Author(s):  
C. Sung ◽  
A. E. White ◽  
D. R. Mikkelsen ◽  
M. Greenwald ◽  
C. Holland ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Temperature Fluctuations ◽  
Quantitative Comparison ◽  
Gyrokinetic Simulations

Mode structure of turbulent electron temperature fluctuations in the Texas Experimental Tokamak Upgrade

1998 ◽  
Vol 5 (12) ◽  
pp. 4117-4120 ◽  
Author(s):  
B. H. Deng ◽  
D. L. Brower ◽  
G. Cima ◽  
C. W. Domier ◽  
N. C. Luhmann ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Temperature Fluctuations ◽  
Mode Structure

Imaging of core electron temperature fluctuations of tokamak plasmas

2002 ◽  
Vol 30 (1) ◽  
pp. 72-73 ◽  
Author(s):  
B.H. Deng ◽  
D.L. Brower ◽  
G. Cima ◽  
C.W. Domier ◽  
A.J.H. Donne ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Temperature Fluctuations ◽  
Tokamak Plasmas ◽  
Core Electron

scholarly journals Measuring Δ′ from electron temperature fluctuations in the Tokamak Fusion Test Reactor

1998 ◽  
Vol 5 (2) ◽  
pp. 450-454 ◽  
Author(s):  
C. Ren ◽  
J. D. Callen ◽  
T. A. Gianakon ◽  
C. C. Hegna ◽  
Z. Chang ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Temperature Fluctuations ◽  
Test Reactor

Narrowing of Doppler spectral line shapes by correlated ion and electron temperature fluctuations

2008 ◽  
Vol 84 (4) ◽  
pp. 43002 ◽  
Author(s):  
J. Rosato ◽  
H. Capes ◽  
Y. Marandet ◽  
F. B. Rosmej ◽  
R. Stamm ◽  
...  
Keyword(s):  
Spectral Line ◽  
Electron Temperature ◽  
Temperature Fluctuations ◽  
Line Shapes

Electron temperature fluctuations in drift-resistive ballooning turbulence

1997 ◽  
Vol 4 (4) ◽  
pp. 991-1001 ◽  
Author(s):  
A. Zeiler ◽  
J. F. Drake ◽  
D. Biskamp
Keyword(s):  
Electron Temperature ◽  
Temperature Fluctuations
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