Abstract：In this paper, a Nd∶YAG laser with an operating wavelength of 532 nm was employed to generate plasmas of TU0 copper sample on the surface. With grating spectrograph and intensified charge coupled device(ICCD) as spectroscopy analysis detection equipment, self-absorption properties of five atomic lines of Cu(Ⅰ) with wavelengths of 324.754, 327.396, 510.554, 515.324 and 521.320 nm have been studied and compared with observation time from 211 to 300 μs after the trigger and laser energy from 30 to 100 mJ. The result indicates that the extents of self-absorption of atomic lines decrease with increasing observation time and after a period of time of 5 to 20 μs the self-absorption cannot be observed; with the increase of laser energy ranging from 50 to 100 mJ, the self absorption shows an increase of extents and duration. Meanwhile the self-absorption properties differ due to different energy-level states of atomic spectrum line transition. Changes of self-absorption extents with observation time and energy and of self-absorption duration with energy exhibit similar characteristics for the two groups of lines range from 324.754 to 327.396 nm and 515.324 to 521.320 nm, respectively, with the same atomic configuration. Moreover, the extents of self-absorption at spectral lines with large angular momentum (324.754 nm，1/2-3/2 and 521.320 nm，3/2-5/2) are more sensitive to change of the laser energy with a higher value of extent change and a longer duration. In comparison, the self-absorption of spectral line 510.554 nm (3d104p-3d94s2) has low extent and short duration when laser energy is below 80 mJ, and the extent increases and the duration becomes longer for the energy range from 80 to 100 mJ.
Key words：LIBS;Self-absorption;Atomic Line of Copper;Atomic Configuration
徐送宁，段文钊，宁日波，李 倩，艾 卓，姜 冉 . 激光诱导击穿铜特征谱线自吸收特性研究 [J]. 光谱学与光谱分析, 2016, 36(04): 1175-1179.
XU Song-ning, DUAN When-zhao, NING Ri-bo, LI Qian, AI Zhuo, JIANG Ran . Study on Self-Absorption Properties in Laser Induced Breakdown Spectroscopy from Copper Sample. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(04): 1175-1179.
[1] Zhang J, Ma H H, Xi J H, et al. Journal of Analytical Atomic Spectrometry, 2012, 27: 1903. [2] Lu Yuan, Li Ying, Wu Jianglai, et al. SPIE, 2009, 7382: 73823U-1. [3] Sarkar A, Alamelu D-Aggarwal S K. Optics and Laser Technology, 2012, 1(44): 30. [4] Ermalitskaia F E, Voropay Y S, Zajogin A P. Journal of Applied Spectroscopy, 2012, 77(2): 153. [5] Gondal M A, Dastageer A, Maslehuddin M, et al. Optics and Laser Technology, 2012, 3(44): 566. [6] Elsayed K, Imam H, Harfoosh A, et al. Optics and Laser Technology, 2012, 1(44): 130. [7] Sabsabi M, Cielo P. Applied Spectroscopy, 1995, 49(4): 499. [8] AragOn C, Aguilera J A, Penalba F. Journal of Applied Spectroscopy, 1999, 53: 1259. [9] AragOn C, Bengoechea J, Aguilera J A. Spectrochimica Acta Part B: Atomic Spectroscopy, 2001, 56: 619. [10] El Sherbini A M, Th MEI Sherbini, Hegazy H, et al. Spectrochimica Acta Part B: Atomic Spectroscopy, 2005, 60: 1573. [11] Habib A A M, El-Gohary Z. Journal of Quantitative Spectroscopy and Radiative Transfer, 2002, 72(4): 341. [12] Pestehe S J, Tallents G J. Journal of Quantitative Spectroscopy and Radiative Transfer, 2002, 72(6): 853. [13] He J, Zhang Q G. Spectroscopy Letters, 2012, 45: 452. [14] Liao Lamei, He Jian. International Journal for Light and Electron Optics, 2014, 125 (4): 1602. [15] Burger M, Skocic M, Bukvic S. Spectrochimica Acta Part B: Atomic Spectroscopy, 2014, 101: 51.
