Plasma temperature determination from the maximum intensity of a symmetric self-reversed line

1983 ◽  
Vol 16 (7) ◽  
pp. 1267-1281 ◽  
Author(s):  
D Karabourniotis
Keyword(s):  
Plasma Temperature ◽  
Maximum Intensity ◽  
Temperature Determination ◽  
Reversed Line

Plasma temperature determination from the total intensity of a self‐reversed spectral line

1982 ◽  
Vol 53 (11) ◽  
pp. 7259-7264 ◽  
Author(s):  
D. Karabourniotis ◽  
C. Karras ◽  
M. Drakakis ◽  
J. J. Damelincourt
Keyword(s):  
Spectral Line ◽  
Plasma Temperature ◽  
Temperature Determination

High-speed three-dimensional plasma temperature determination of axially symmetric free-burning arcs

2013 ◽  
Vol 46 (12) ◽  
pp. 125203 ◽  
Author(s):  
B Bachmann ◽  
R Kozakov ◽  
G Gött ◽  
K Ekkert ◽  
J-P Bachmann ◽  
...  
Keyword(s):  
High Speed ◽  
Three Dimensional ◽  
Plasma Temperature ◽  
Axially Symmetric ◽  
Temperature Determination

Interaction of an Excimer-Laser Beam with Metals. Part III: The Effect of a Controlled Atmosphere in Laser-Ablated Plasma Emission

1992 ◽  
Vol 46 (11) ◽  
pp. 1597-1604 ◽  
Author(s):  
Yong-Ill Lee ◽  
Terry L. Thiem ◽  
Gi-Ho Kim ◽  
Ye-Yung Teng ◽  
Joseph Sneddon
Keyword(s):  
Excimer Laser ◽  
Plasma Temperature ◽  
Fold Increase ◽  
Argon Atmosphere ◽  
Maximum Intensity ◽  
Reduced Pressure ◽  
Helium Atmosphere ◽  
Copper Target ◽  
Arf Excimer Laser ◽  
193 Nm

The effects of pressure over the range 10 to 760 Torr and of atmosphere (air, argon, and helium) on an ArF-excimer laser ( λ = 193 nm) ablated plasma created above the surface of a copper target was studied with the use of emission measurements. These factors greatly influenced the shape, line-to-background (L/B) ratio, and temperature of the plasma. In general, the size of the plasma decreased with increasing pressure. In air or argon, and at pressures less than 50 Torr, the plasma consisted of two distinct regions. With the use of neutral copper [Cu(I)] lines, reduced pressure from 760 to 10 Torr resulted in a 7-fold increase in air and an 11-fold increase in an argon atmosphere. With the use of a helium atmosphere, the maximum line intensity was obtained at 50 Torr. This was a 1.5-fold increase over that obtained at 760 Torr. With a reduction in the pressure in air or argon, the position of maximum intensity (for copper atom and ion lines) moved away from the surface. For helium, the position of maximum intensity did not significantly vary in accordance with a reduction in the pressure. In general, the plasma temperature decreased with decreasing pressure.

scholarly journals Plasma Temperature Determination of Hydrogen Containing High-Frequency Electrodeless Lamps by Intensity Distribution Measurements of Hydrogen Molecular Band

2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Zanda Gavare ◽  
Gita Revalde ◽  
Atis Skudra
Keyword(s):  
Intensity Distribution ◽  
High Frequency ◽  
Plasma Temperature ◽  
Gas Temperature ◽  
Applied Current ◽  
Temperature Determination ◽  
Diagonal Band ◽  
Gas Temperature Determination ◽  
Good Agreement

The goal of the present work was the investigation of the possibility to use intensity distribution of the Q-branch lines of the hydrogen Fulcher-α diagonal band (d3Πu−→a3∑g+ electronic transition; Q-branch with v=v′=2) to determine the temperature of hydrogen containing high-frequency electrodeless lamps (HFEDLs). The values of the rotational temperatures have been obtained from the relative intensity distributions for hydrogen-helium and hydrogen-argon HFEDLs depending on the applied current. The results have been compared with the method of temperature derivation from Doppler profiles of He 667.8 nm and Ar 772.4 nm lines. The results of both methods are in good agreement, showing that the method of gas temperature determination from the intensity distribution in the hydrogen Fulcher-α (2-2)Q band can be used for the hydrogen containing HFEDLs. It was observed that the admixture of 10% hydrogen in the argon HFEDLs significantly reduces the gas temperature.

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