Abstract:Protected with Ar, it would induce atom Ar breakdown to ablate aluminum target with a pulsed Nd:YAG laser beam. Further more, a lot of Ar+ ionic characteristic lines radiation appeared accompanying the aluminum plasma emission. In this work, based on the Ar+ ionic characteristic lines radiation, we analyzed time-resolved behavior of four Ar+ ionic characteristic lines Ar Ⅱ 385.057, Ar Ⅱ 386.853, Ar Ⅱ 404.291 and Ar Ⅱ 407.201 nm, respectively. Electron temperature of aluminum plasma in the stage of ionic lines emission was approximately calculated. As a result, in this stage, the electron temperature ranged from 15 000 to 22 000 K, and decreased successively with the delay time increasing. Compared with other similar works, we found that our results agreed with many similar estimations.
Key words:Laser ablation;Ionic characteristic lines radiation;Electron temperature;Local thermodynamic equilibrium(LTE);Transition probability
李尊营,刘复义 . Ar辅助确定Al等离子体电子温度 [J]. 光谱学与光谱分析, 2004, 24(02): 132-134.
LI Zun-ying,LIU Fu-yi . Electron Temperature of Al Plasma Estimated with Ar . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(02): 132-134.
[1] Wolf Paul J. J. Appl. Phys., 1992, 72: 1280. [2] Grant Kenneth J. Paul George L. Applied Spectroscopy, 1990, 44: 1349. [3] SONG Yi-zhong,LI Zun-ying,ZHU Rui-fu et al(宋一中,李尊营, 朱瑞富等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2002, 22(4): 545. [4] Sabsabi Mohamad, Cielo Paolo. Applied Spectroscopy, 1995, 49: 499. [5] ZHANG Yan-hui,SONG Yi-zhong(张延惠,宋一中). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2000, 20(1): 25. [6] Griem Hans R. Plasma Spectroscopy. New York: McGraw-Hill, 1964. [7] ZHANG Shu-dong et al(张树东等). Chinese Journal of Quantum Electronics(量子电子学报), 2001, 18: 46. [8] W. Lochte-Holthreven. Plasma Diagnostics. Amsterdam: North-Holland, 1968. [9] Wiese W L, Martin G A. Wavelengths and Transition Probabilities for Atoms and Atomic ions, Washington: National Bureau of Standards, 1980(U. S. Ref. Data Series 68).