Determination of laser plasma temperature from study of radiation in roentgen and visible regions of spectrum

1974 ◽  
Vol 13 (1) ◽  
pp. 100-103
Author(s):  
G. G. Dolgov-Savel'ev ◽  
V. N. Karnyushin
Keyword(s):  
Laser Plasma ◽  
Plasma Temperature

scholarly journals SPECTROSCOPY PECULIARITIES OF ELECTRIC ARC DISCHARGE PLASMA WITH IRON VAPOURS

2021 ◽  
pp. 171-175
Author(s):  
A. Murmantsev ◽  
A. Veklich ◽  
V. Boretskij
Keyword(s):  
Discharge Plasma ◽  
Arc Discharge ◽  
Line Emission ◽  
Plasma Temperature ◽  
Optical Emission ◽  
Plasma Source ◽  
Electric Arc ◽  
Spectral Lines ◽  
Electric Arc Discharge

This work is devoted to spectroscopy peculiarities of electric arc discharge plasma with iron vapours. The solution of the main issue of optical emission spectroscopy, namely, selection of iron spectral lines, to study the parameters of non-uniform and non-steady-state plasma source, was considered within this paper. Specifically, the Boltzmann plots technique was used for detailed analysing of application possibility of Fe I spectral lines as well as for determination of plasma temperature. The spatial profiles of selected spectral line emission intensities were used to measure the radial distributions of plasma temperature of free-burning arc discharge between consumable electrodes at 3.5 A.

scholarly journals Determination of plasma temperature by a semi-empirical method

2004 ◽  
Vol 34 (4b) ◽  
pp. 1673-1676 ◽  
Author(s):  
F. O. Borges ◽  
G. H. Cavalcanti ◽  
A. G. Trigueiros
Keyword(s):  
Plasma Temperature ◽  
Empirical Method ◽  
Semi Empirical

Determination of the gain due to a transition in the Be IV ion in a recombining laser plasma

1990 ◽  
Vol 20 (10) ◽  
pp. 1248-1250
Author(s):  
B A Bryunetkin ◽  
V M Dyakin ◽  
G A Koldashov ◽  
I Yu Skobelev ◽  
A Ya Faenov
Keyword(s):  
Laser Plasma

scholarly journals An effect of the target position relative to the laser focus on X-ray emission from the laser plasma

1992 ◽  
Vol 10 (4) ◽  
pp. 743-751 ◽  
Author(s):  
M. Chvojka ◽  
B. Králiková ◽  
E. Krouský ◽  
L. Láska ◽  
K. Maŝek ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Laser System ◽  
Broad Band ◽  
Plasma Temperature ◽  
Target Position ◽  
Resonant Line ◽  
X Ray ◽  
Laser Focus ◽  
Foil Target ◽  
Band Spectra

The first harmonics beam generated by an iodine laser system was focused by an f/2 optics on an Al foil target. The X-ray output from the laser plasma both in the line and broad-band spectra was registered over an interval around the “ideal” focus. It was found that the maximum X-ray power is not obtained in the focus itself but for a somewhat larger focal spot outside the focus. To explain this phenomena, temperature and density measurements were in addition made. The plasma temperature evaluated from both the line (He-like Al XII resonant line and j, k, l satellites) and broad-band spectra (two foil method) was also measured and found to be largely constant in the vicinity of the focus. The line and broad-band temperatures differ, the broad-band temperature being about 25% higher. The electron density was equally determined using an intercombination line.

Determination of plasma temperature near a dielectric surface

1971 ◽  
Vol 14 (3) ◽  
pp. 394-396
Author(s):  
S. I. Andreev ◽  
V. E. Gavrilov
Keyword(s):  
Plasma Temperature ◽  
Dielectric Surface

Spectroscopic Analysis of the Plasma in Laser Welding of AZ31 Magnesium Alloy

2013 ◽  
Vol 341-342 ◽  
pp. 296-300
Author(s):  
Xiao Yan Gu ◽  
Huan Li ◽  
Ying Gao
Keyword(s):  
Magnesium Alloy ◽  
Laser Welding ◽  
Laser Plasma ◽  
Spectroscopic Analysis ◽  
Plasma Temperature ◽  
Cooling Effect ◽  
Az31 Magnesium Alloy ◽  
Welding Parameters ◽  
Yag Laser ◽  
The Relationship

AZ31 magnesium alloy was welded by the YAG laser. The plasma of laser welding was studied by the spectra and the plasma temperature was also calculated. The relationship between the welding parameters and plasma temperature was studied. The paper shows that the cooling effect of the plasma using helium is significant. Laser plasma temperature decreases from the center to the periphery and the temperature in the center is higher than 9000K. The evaporation of Mg element concentrates in the center of the laser plasma.

Determination of the plasma temperature in a pulsating arc

2013 ◽  
Vol 51 (6) ◽  
pp. 742-746 ◽  
Author(s):  
I. M. Zakirov ◽  
F. F. Zalyalieva ◽  
R. S. Toukhvatoulline ◽  
T. A. Ashrapov
Keyword(s):  
Plasma Temperature

Experimental Study of Measurement of Laser Plasma Temperature During Laser Machining

Applied laser ◽  
2013 ◽  
Vol 33 (3) ◽  
pp. 309-312
Author(s):  
薛伟 Xue Wei ◽  
朱德华 Zhu Dehua ◽  
冯爱新 Feng Aixin
Keyword(s):  
Experimental Study ◽  
Laser Plasma ◽  
Plasma Temperature ◽  
Laser Machining

Determination of Temperature in a Toroidal Theta Pinch Discharge with an Image Converter Camera

1965 ◽  
Vol 20 (2) ◽  
pp. 193-196 ◽  
Author(s):  
P. C. T. Van Der Laan ◽  
R. Mewe
Keyword(s):  
Plasma Column ◽  
Capacitor Bank ◽  
Drift Time ◽  
Plasma Temperature ◽  
Image Converter ◽  
Instituut Voor ◽  
Theta Pinch ◽  
Complete Ionization ◽  
The Mean

With an image converter camera, developed at the Instituut voor Plasma-Fysica, streak pictures have been made of toroidal θ-pinch discharges in helium at pressures ranging from 0.01 to 0.06 torr. The discharges are produced by a capacitor bank of 2.5 kJ. From the pictures the acceleration of the outward drifting plasma column and the drift time (1 to 2 μs) have been measured. From these quantities the mean plasma temperature after the compression has been determined. The temperature depends on the pressure and varies from about 5 x 105°K at 0.01 torr to 105°K at 0.06 torr. These results are compared with temperatures calculated from the irreversible heating during the compression. From spectroscopical measurements of the intensities of He II λ = 4686 Å and He I λ = 5015 Å the electron temperature is estimated and the assumption of complete ionization is checked.

Sign in / Sign up

Export Citation Format

Share Document