scholarly journals Electron density measurements in the National Spherical Torus Experiment detached divertor region using Stark broadening of deuterium infrared Paschen emission lines

2006 ◽  
Vol 77 (10) ◽  
pp. 10F127 ◽  
Author(s):  
V. A. Soukhanovskii ◽  
D. W. Johnson ◽  
R. Kaita ◽  
A. L. Roquemore
Keyword(s):  
Electron Density ◽  
Emission Lines ◽  
Stark Broadening ◽  
Spherical Torus ◽  
Density Measurements

Coronal Electron Density Measurements Using the Near-Ir [Fe XIII] Emission Lines

1994 ◽  
pp. 185-188
Author(s):  
M. J. Penn ◽  
J. R. Kuhn ◽  
J. Arnaud ◽  
D. L. Mickey ◽  
B. J. Labonte
Keyword(s):  
Electron Density ◽  
Emission Lines ◽  
Density Measurements ◽  
Near Ir ◽  
Coronal Electron

Coronal electron density measurements using the near-ir [Fe XIII] emission lines

1994 ◽  
Vol 70 (1-2) ◽  
pp. 185-188 ◽  
Author(s):  
M. J. Penn ◽  
J. R. Kuhn ◽  
J. Arnaud ◽  
D. L. Mickey ◽  
B. J. Labonte
Keyword(s):  
Electron Density ◽  
Emission Lines ◽  
Density Measurements ◽  
Near Ir ◽  
Coronal Electron

scholarly journals Direct Comparison of Electron Density Measurements in Laser-Created Plasmas Using Stark Broadening and Satellite Line Intensities

1984 ◽  
Vol 86 ◽  
pp. 242-245
Author(s):  
Ph. Alaterre ◽  
P. Audebert ◽  
J.P. Geindre ◽  
P. Monier ◽  
C. Popovics ◽  
...  
Keyword(s):  
Electron Density ◽  
Electric Fields ◽  
Second Harmonic ◽  
Pulse Length ◽  
Target Surface ◽  
Carbon Substrate ◽  
Stark Broadening ◽  
Satellite Line ◽  
Density Measurements ◽  
Line Intensities

Spectral line profiles, broadened mostly by Stark effects from electric fields produced by charge particles, and diélectronic satellite line intensities have recently been used for determining electron densities in the dense region of laser-created plasmas. We present here a direct comparison of electron density measurements in the conduction region of laser created plasmas on a plane target using these two techniques.Experiments were carried at the GRECO laser facility, using the Nd phosphate glass laser at its second harmonic (0.53 μm) and 600 ps pulse length. The laser was focused on a 160 μm focal spot in which was centered a 25 or 50 μm diameter aluminum dot implanted on a carbon substrate. Laser intensities were in the range 1 × 1014−3 × 1014 W/cm2. The ls4p−ls2 He-like transition, the 4p−ls H-like transition and the Ly c satellites were recorded on the same spectrum with a PET flat crystal spectrograph. Spot spectroscopy provided quasi-homogeneity and low reabsorption along the line of sight which was tilted 7° out the target surface. 3 μm resolution along the laser axis was obtained with an imaging knife-edge placed 1 mm apart from the target.

Electron density measurements of atmospheric-pressure non-thermal N2 plasma jet by Stark broadening and irradiance intensity methods

2014 ◽  
Vol 21 (5) ◽  
pp. 053510 ◽  
Author(s):  
Dezhi Xiao ◽  
Cheng Cheng ◽  
Jie Shen ◽  
Yan Lan ◽  
Hongbing Xie ◽  
...  
Keyword(s):  
Electron Density ◽  
Atmospheric Pressure ◽  
Plasma Jet ◽  
Stark Broadening ◽  
Density Measurements ◽  
N2 Plasma

scholarly journals Spectral diagnostic of a resonantly laser created plasma

1990 ◽  
Vol 8 (1-2) ◽  
pp. 307-317 ◽  
Author(s):  
J. P. Bardet ◽  
J. L. Bobin ◽  
C. Dimarcq ◽  
L. Giry ◽  
J. B. Larour ◽  
...  
Keyword(s):  
Electron Density ◽  
Time History ◽  
Sodium Atom ◽  
Emission Lines ◽  
Stark Broadening ◽  
Tunable Dye Laser ◽  
History Of ◽  
Fluorescence Light ◽  
Electron Density And Temperature ◽  
Spectral Diagnostic

Plasma creation occurs when the frequency of a tunable dye laser is adjusted to the 589 nm D-doublet of the sodium atom. Occurrence and Stark broadening of emission lines in the fluorescence light are used as diagnostics. The time history of the electron density and temperature is inferred from these measurements. The peak electron density was found to be above 5 · 1016 cm−3 with a temperature lower than 1 eV.

Theoretical research of electron-density measurements of plane targets using soft XRL deflectometry

2001 ◽  
Vol 11 (PR2) ◽  
pp. Pr2-479-Pr2-481
Author(s):  
C. Ye ◽  
G. Zhang ◽  
T. Zhang ◽  
H. Peng ◽  
W. Zheng
Keyword(s):  
Electron Density ◽  
Theoretical Research ◽  
Density Measurements

scholarly journals Electron density and gas density measurements in a millimeter-wave discharge

2016 ◽  
Vol 23 (8) ◽  
pp. 083512 ◽  
Author(s):  
S. C. Schaub ◽  
J. S. Hummelt ◽  
W. C. Guss ◽  
M. A. Shapiro ◽  
R. J. Temkin
Keyword(s):  
Electron Density ◽  
Millimeter Wave ◽  
Gas Density ◽  
Density Measurements ◽  
Wave Discharge
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