Determination of the Electrical Circuit Equivalent to a Pulsed Discharge in Water: Assessment of the Temporal Evolution of Electron Density and Temperature

2020 ◽  
Vol 48 (9) ◽  
pp. 3193-3202
Author(s):  
Thomas Merciris ◽  
Flavien Valensi ◽  
Ahmad Hamdan
Keyword(s):  
Electron Density ◽  
Temporal Evolution ◽  
Electrical Circuit ◽  
Pulsed Discharge ◽  
Electron Density And Temperature ◽  
Water Assessment

Theoretical calculation of electron density and temperature in the edge of tokamak

2017 ◽  
Vol 31 (17) ◽  
pp. 1750196 ◽  
Author(s):  
Muhammad Asif ◽  
Anila Asif
Keyword(s):  
Theoretical Calculation ◽  
Electron Density ◽  
Langmuir Probe ◽  
Temporal Evolution ◽  
Edge Plasma ◽  
Confinement Time ◽  
Electron Density And Temperature ◽  
Particle Confinement ◽  
Good Agreement ◽  
Probe Array

In this work, we use a method based on the concept of particle confinement time [Formula: see text] uniqueness to calculate the electron density and temperature in ohmically heated, edge plasma of the Hefei tokamak-7. Here, with the help of the data taken from Johnson and Hinnov’s table, we have done an extensive work to find electron densities and temperatures that satisfy the [Formula: see text] uniqueness to evaluate the temporal evolution of electron density [Formula: see text] and temperature [Formula: see text]. The results are in good agreement as measured from the Langmuir probe array in previous works.

scholarly journals Observations of Infrared Fine-Structure Lines: [S III]

1978 ◽  
Vol 76 ◽  
pp. 126-126
Author(s):  
Lawrence T. Greenberg
Keyword(s):  
Fine Structure ◽  
Electron Density ◽  
Experimental Error ◽  
Column Density ◽  
Surface Brightness ◽  
Ngc 7027 ◽  
Structure Line ◽  
Electron Density And Temperature ◽  
Fine Structure Lines

Recent observations of the 18.7 ym fine-structure line of S++ in NGC 7027 and BD+30°3639 (Greenberg, Dyal and Geballe, 1977 Ap.J.(Letters), 213, L74) allow the first determination of an ionic column density in ionized nebulae. The line ratios 18.7 μm/A9532 and λ6312/λ9532, besides yielding both electron density and temperature in the S++ region, have been used to indicate that the fine-structure levels of S++ are collisionally saturated. In this case the 18.7 ym surface brightness directly measures the column density of S++ ions with little dependence upon nebular structure, the major uncertainty being the experimental error. This research has been partially supported by NASA Grants NGR 05-003-511 and NGL 05-003-272.

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