An extreme ultraviolet spectroscopic diagnostic for fluctuations of electron density and temperature in tokamak plasmas

1990 ◽  
Vol 68 (11) ◽  
pp. 5511-5518
Author(s):  
L. K. Huang ◽  
M. Finkenthal ◽  
A. K. Bhatia ◽  
H. W. Moos
Keyword(s):  
Electron Density ◽  
Extreme Ultraviolet ◽  
Tokamak Plasmas ◽  
Electron Density And Temperature

scholarly journals Tokamak Plasmas: A Paradigm for Coronal Equilibrium and Disequilibrium

1990 ◽  
Vol 115 ◽  
pp. 57-62
Author(s):  
Richard D. Petrasso
Keyword(s):  
Electron Density ◽  
Direct Consequence ◽  
High Electron ◽  
Tokamak Plasmas ◽  
Edge Region ◽  
Plasma Region ◽  
Astrophysical Plasmas ◽  
Central Plasma ◽  
Electron Density And Temperature ◽  
Ion Species

AbstractTokamaks operate over a wide parameter space, allowing access to plasma conditions relevant to astrophysical plasmas. For high electron density discharges, for example, the central electron density and temperature are ~ 3 × 1014cm-3 and ~ 1.5 keV, and the central plasma region is in coronal equilibrium. Towards the edge of the plasma, however, many ion species will be far out of coronal equilibrium. A novel feature of the edge region is the seemingly contradictory property that it is, simultaneously, both a strongly recombining and a strongly ionizing plasma. Recent tokamak observations of strongly recombining plasmas also show that the G parameter (the ratio of forbidden plus intercombination to resonance lines) is larger by a factor of 3 than the ratio of statistical weights of the triplet-singlet series. Such observations can be of direct consequence to the interpretation of non-equilibrium astrophysical plasmas.

THEORETICAL ELECTRON DENSITY AND TEMPERATURE SENSITIVE EMISSION LINE RATIOS FOR HELIUM-LIKE Si XIII COMPARED TO DITE TOKAMAK OBSERVATIONS

1989 ◽  
Vol 50 (C1) ◽  
pp. C1-559-C1-564
Author(s):  
F. P. KEENAN ◽  
R. BARNSLEY ◽  
J. DUNN ◽  
K. D. EVANS ◽  
S. M. McCANN ◽  
...  
Keyword(s):  
Emission Line ◽  
Electron Density ◽  
Temperature Sensitive ◽  
Electron Density And Temperature

Impurity effects on trapped electron modes in tokamak plasmas with inverted electron density profile

2021 ◽  
Vol 28 (5) ◽  
pp. 052510
Author(s):  
X. R. Zhang ◽  
J. Q. Dong ◽  
H. R. Du ◽  
J. Y. Liu ◽  
Y. Shen ◽  
...  
Keyword(s):  
Electron Density ◽  
Density Profile ◽  
Electron Density Profile ◽  
Tokamak Plasmas ◽  
Impurity Effects ◽  
Trapped Electron

scholarly journals Measurement of Electron Density and Temperature of Laser-Induced Copper Plasma

2013 ◽  
Vol 25 (4) ◽  
pp. 2192-2198 ◽  
Author(s):  
M.A. Naeem ◽  
M. Iqbal ◽  
N. Amin ◽  
M. Musadiq ◽  
Y. Jamil ◽  
...  
Keyword(s):  
Electron Density ◽  
Electron Density And Temperature ◽  
Copper Plasma
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