Spectral Self‑Absorption Correction Based on Electron Temperature and Electron Density

Yanwei Yang; Lili Zhang; Ruizhong Zhang

doi:10.3788/CJL231446

Chinese Journal of Lasers, Volume. 51, Issue 17, 1711003(2024)

Spectral Self‑Absorption Correction Based on Electron Temperature and Electron Density

Yanwei Yang^1、*, Lili Zhang^1,2, and Ruizhong Zhang³

Author Affiliations

¹Department of Physics, Lüliang University, Lüliang033000, Shanxi , China

²Key Laboratory of Instrumentation Science and Dynamic Measurement, Ministry of Education, North University of China, Taiyuan 030051, Shanxi , China

³Shanxi Huaxing Aluminum Industry Co., Ltd., Lüliang033603, Shanxi , China

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Abstract Get PDF(in Chinese)

Figures & Tables(8)

Fig. 1. Schematic of experimental setup

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Fig. 2. LIBS of bauxite sample

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Fig. 3. Boltzmann plot before correction with data shown by dots and fitted curves shown by curves

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Fig. 4. Boltzmann plot after first correction with data shown by dots and fitted curves shown by curves

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Fig. 5. H_α spectrum

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Fig. 6. Boltzmann plot after second correction with data shown by dots and fitted curves shown by curves

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Table 1. Spectral parameters of selected spectral line

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Table 1. Spectral parameters of selected spectral line

Element	Wavelength /nm	$A_{m n}$ /（10⁸ s^-1）	$E_{m}$ /eV	$g_{m}$
Al	308.21	0.587	4.02	4
	309.27	0.729	4.02	6
	394.4	0.499	3.14	2
	396.15	0.985	3.14	2
Fe	438.354	0.500	4.31	11
	404.581	0.862	4.55	9
	407.174	0.764	4.65	5
	406.359	0.665	4.60	7
	373.486	0.901	4.18	11
	358.119	1.020	4.31	13
	344.061	0.171	3.60	7
	302.049	0.194	4.19	5
	275.014	0.274	4.56	7
	274.698	0.169	5.55	6
	274.241	0.470	4.61	5
Si	252.411	2.220	4.92	1
	252.851	0.904	4.93	3
	288.158	0.217	5.08	3
	243.515	0.443	5.87	5
	390.552	0.133	5.08	3
Ti	498.173	0.660	3.34	13
	482.041	0.149	5.23	7
	398.976	0.448	3.13	7
	519.297	0.386	2.41	7
	521.038	0.389	2.43	9

Table 2. Results of quantitative analysis using CF-LIBS
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Table 2. Results of quantitative analysis using CF-LIBS
Element Mass fraction /%
Certified value Before correction After first correction After second correction
Al 46.52 41.39 43.57 44.87
Si 22.96 18.32 19.41 20.20
Fe 14.10 11.79 13.12 13.65
Ti 1.36 0.89 0.94 0.97

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Yanwei Yang, Lili Zhang, Ruizhong Zhang. Spectral Self‑Absorption Correction Based on Electron Temperature and Electron Density[J]. Chinese Journal of Lasers, 2024, 51(17): 1711003

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