[1] Li J M, Xu M L, Ma Q X et al. Sensitive determination of silicon contents in low-alloy steels using micro laser-induced breakdown spectroscopy assisted with laser-induced fluorescence[J]. Talanta, 194, 697-702(2019).

[2] Yu Y, Zhao N J, Meng D S et al. LIBS detection of heavy metals in soil based on hemispherical constraint and partial least squares[J]. Chinese Journal of Quantum Electronics, 36, 87-92(2019).

[3] Ren L, Hao X J, Yang Y W et al. Time evolution characteristics of laser-induced breakdown spectroscopy under combined action of cavity confinement and nanoparticles[J]. Spectroscopy and Spectral Analysis, 40, 1012-1017(2020).

[4] Li B H, Gao X, Song C et al. Laser induced plasma spectral characteristics of Cu with magnetically and spatially combined confinement[J]. Acta Physica Sinica, 65, 235201(2016).

[5] Lei B Y, Xu B P, Wang J et al. Large modulation of ion dynamics for discharge-assisted laser-induced breakdown spectroscopy[J]. Cell Reports Physical Science, 4, 101267(2023).

[6] Poggialini F, Campanella B, Legnaioli S et al. Comparison of convolutional and conventional artificial neural networks for laser-induced breakdown spectroscopy quantitative analysis[J]. Applied Spectroscopy, 76, 959-966(2022).

[7] Zhang R R, Ying L N, Zhou W D. Application of relevance vector machine combined with principal component analysis in quantitative analysis of LIBS[J]. Chinese Journal of Quantum Electronics, 40, 376-382(2023).

[8] Se K W, Ghoshal S K, Wahab R A. Laser-induced breakdown spectroscopy unified partial least squares regression: An easy and speedy strategy for predicting Ca, Mg and Na content in honey[J]. Measurement, 136, 1-10(2019).

[9] He J, Pan C Y, Liu Y B et al. Quantitative analysis of carbon with laser-induced breakdown spectroscopy (LIBS) using genetic algorithm and back propagation neural network models[J]. Applied Spectroscopy, 73, 678-686(2019).

[10] Wang J G, Li X L, Wang C et al. Effect of laser wavelength and energy on the detecting of trace elements in steel alloy[J]. Optik, 166, 199-206(2018).

[11] Wang J G, Feng D, Li X L et al. Effect of laser energy on laser-induced plasma confined by a hemispherical cavity[J]. Spectrochimica Acta Part B: Atomic Spectroscopy, 175, 106015(2021).

[12] Wang J G, Li X L, Li H H et al. Lens-to-sample distance effect on the quantitative analysis of steel by laser-induced breakdown spectroscopy[J]. Journal of Physics D: Applied Physics, 53, 255203(2020).

[13] Nejad M A, Soltanolkotabi M, Majd A E. Polarization mechanism in a ns laser-induced plasma spectroscopy of Al alloy[J]. Applied Phyics B-Lasers and Optics, 124, 6(2018).

[14] Fu H B, Dong F Z, Ni Z B et al. The influence of acquisition delay for calibration-free laser-induced breakdown spectroscopy[J]. Applied Spectroscopy, 70, 405-415(2016).

[15] Jia J W, Fu H B, Hou Z Y et al. Effect of laser beam shaping on the determination of manganese and chromium elements in steel samples using laser-induced breakdown spectroscopy[J]. Spectrochimica Acta Part B: Atomic Spectroscopy, 163, 105747(2020).

[16] Jia J W, Fu H B, Hou Z Y et al. Analysis of element content in cement by Gaussian and flattop laser-induced breakdown spectroscopy[J]. Journal of Physics D: Applied Physics, 52, 405102(2019).

[17] Hou Z Y, Afgan M S, Sheta S et al. Plasma modulation using beam shaping to improve signal quality for laser induced breakdown spectroscopy[J]. Journal of Analytical Atomic Spectrometry, 35, 1671-1677(2020).