Precise calculation of the electron temperature of laser-induced water scale plasma
-
1.
School of Electronic Engineering, Xi'an University of Posts & Telecommunications, Xi'an 710121, China;
-
2.
Institution of Applied Physics, Xi'an University of Arts and Science, Xi'an 710065, China;
-
3.
Anyang Kaixin Transformer Company Limited, Anyang 455000, China
-
Received Date:
2013-09-24
Accepted Date:
2013-11-01
-
Abstract
To reduce the calculation error induced by the uncertainty of the parameters, such as spectrum spontaneous emission transition probabilities, the electron temperature of the laser-induced water scale plasma was studied using a modified iterative Boltzmann algorithm. After 12 iterations, the linear correlation coefficient was increased from 0.7687 up to 0.99991 while the electron temperature of the water scale plasma was 5012K. After the fitting of Ca Ⅱ 393.37nm by Lorentz function, the electron density of water scale plasma was 5.7×1016cm-3, much higher than the critical value of 6.4×1015cm-3. The laser-induced water scale plasma was proved to meet the local thermodynamic equilibrium model. The experimental results show that this method not only is simple, but also can improve the solution accuracy of the characteristic parameters of the plasma significantly.
-
-
References
|
[1]
|
ZHAO Y, BO Y, JIN C G, et al. Application of laser-induced fluorescence in the low-temperature plasma diagnosis [J]. Laser & Infrared, 2012, 42(4):365-371(in Chinese). |
|
[2]
|
YE C, NING Z Y, JIANG M F, et al. Low-pressure low-tempera-ture plasma diagnosis principle and technology[M]. Beijing: Sci- ence Press, 2004: 1-10(in Chinese). |
|
[3]
|
ZHAO X X, LUO W F, ZHANG X W, et al. Measurement of brass plasma parameters based on laser-induced breakdown spectroscopy [J]. Laser Technology, 2013, 37(1): 93-96(in Chinese). |
|
[4]
|
WU R, LI Y, ZHU S G, et al. Emission spectroscopy diagnostics of plasma electron temperature [J].Spectroscopy and Spectral Analysis, 2008, 28(4): 731-735 (in Chinese). |
|
[5]
|
LUO W F, ZHAO X X, ZHU H Y, et al. Measurements of iron plasma parameters produced by a 1064nm pulsed Nd：YAG laser[J]. High Power Laser and Particle Beams, 2013, 25(7):1690-1696 (in Chinese). |
|
[6]
|
LU T X,LU Y Q.The principle and application of laser spectroscopy [M]. Hefei: University of Science and Technology of China Press, 2006:216-310 (in Chinese). |
|
[7]
|
KONJEVIC N, LESAGE A, FUHR J R, et al. Experimental Stark widths and shifts for spectral lines of neutral and ionized atoms[J].Journal of Physical and Chemical Reference Data, 2002, 31(3): 819-927. |
|
[8]
|
MAO X Z, LIU C, MAO X L, et al. Plasma diagnostics during laser ablation in a cavity [J]. Spectrochimica Acta, 2003, B58(5): 867-877. |
|
[9]
|
ABDELLATIF G, IMAM H. A study of the laser plasma parameters at different laser wavelengths [J]. Spectrochimica Acta, 2002, B57(7):1155-1165. |
|
[10]
|
CREMERS D A, RADZIEMSKI L J. Handbook of laser-induced breakdown spectroscopy [M]. Chichester,UK:John Wilkey & Sons Ltd, 2006:237-239. |
|
[11]
|
AYDIN U, ROTH P, GEHLEN C D, et al. Spectral line selection for time-resolved investigation of laser-induced plasmas by an iterative Boltzmann plot method [J]. Spectrochimica Acta, 2008, B63(10):1060-1065. |
-
-
Proportional views
-
Map
DownLoad: