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采用高功率抽运调Q激光器分别在真空和空气中烧蚀Ti-Al合金靶材激发等离子体, 研究了在不同气体压强下透镜到靶材的距离对等离子体参数的影响机理对于焦距为111 mm的聚焦透镜, 当透镜到靶材距离小于透镜焦距时, 随着距离逐渐接近焦距, 真空和空气中电子温度、电子密度和谱线强度均逐渐增强. 当透镜到靶材距离大于透镜焦距时, 真空中, 电子温度和电子密度仍然继续升高, 而谱线强度却变化不大. 空气中, 等离子体参数却有不同的演化特性: 等离子体的电子温度、电子密度和谱线强度在透镜到靶材距离为107 mm 时达到最大值, 当距离继续增大时, 均呈现出迅速下降的趋势, 当透镜到靶材距离大于112 mm时, 电子温度和电子密度又有明显上升, 特征谱线强度却大幅下降.The analysis of nanosecond laser-induced plasma versus the lens-to sample distance(LTSD) is investigated by 532nm laser ablated Ti-Al alloys in air and vacuum condition. The results indicate that electron temperature and density increase rapidly with the LTSD changing from short distance to the focal length (f=111 mm). Moreover, the plasma parameters by laser ablation in vacuum condition will further increase with LTSD further increasing. As for ambient medium, the plasma parameters reach their maximum values at 107 mm and then substantially decrease. On the other hand, the electron temperature and density rise again, while the intensity of Ti(II)368.52 nm decreases rapidly when the LTSD extends 112 mm.
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Keywords:
- pulse laser ablation /
- Ti-Al alloys /
- plasma /
- emission spectrum
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[2] Kokanović I, J R Cooper, M Matusiak 2009 Phys. Rev. Lett. 102 187002
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[15] Aguilera J A, Bengoechea J, Aragón C 2004 Spectrochimica Acta B 59 461
[16] Aguilera J A, Aragón C 2008 Spectrochimica Acta Part B 63 793
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[18] Dong Hyoung Lee, Tae Hyeong Kim, Euo Chang Jung, Jong II Yun 2011 Appl Phys A 104 863
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[22] Griem H R 1964 Plasma Spectroscopy, (New York: McGraw-Hill)
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[26] Chen M, Liu X D, Zhao M W, Sun Y M 2009 Opt. Lett. 34 2682
[27] Monge E M, Aragón C, Aguilera J A 1999 Appl. Phys. A 69 S691
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-
[1] Fabienne Boué-Bigne 2008 Spectrochimica Acta B 63 1122
[2] Kokanović I, J R Cooper, M Matusiak 2009 Phys. Rev. Lett. 102 187002
[3] Yu B H, Dai N L, Wang Y, Li Y H, Ji L L, Zheng Q G, Lu P X 2007 Acta Phys. Sin. 56 5821 (in Chinese) [余本海, 戴能利, 王英, 李玉华, 季玲玲, 郑启光, 陆培祥 2007 56 5821]
[4] Tsing-Hua Her, Richard J Finlay, Claudia Wu, Shrenik Deliwala, Eric Mazur 1998 Appl. Phys. Lett. 73 1673
[5] Sun D X, Su M G, Dong C Z, Wang X L, Zhang D C, Ma X W 2010 Acta Phys. Sin. 59 4571 (in Chinese) [孙对兄, 苏茂根, 董晨钟, 王向丽, 张大成, 马新文 2010 59 4571]
[6] Yang H D, Li X H, Li G Q, Yuan C H, Tang D C, Xu Q, Qiu R, Wang J B 2011 Acta Phys. Sin. 60 027901 (in Chinese) [杨宏道, 李晓红, 李国强, 袁春华, 唐多昌, 徐琴, 邱蓉, 王俊波 2011 60 027901]
[7] Ohtsu N, Yamane M, Kodama K, Wagatsuma K 2010 Appl. Surf. Sci. 257 691
[8] Liu Z Q, Leusink D P, Wang X, L W M, Gopinadhan K, Annadi A, Zhao Y L, Huang X L, Zeng S W, Huang Z, Srivastava A, Dhar S, Venkatesan T, Ariando 2011 Phys. Rev. Lett. 107 146802
[9] Chichkov B N, Momma C, Nolte S, Von Alvenseleben F, Tnnermann A 1996 Appl. Phys. A 63 109
[10] Zijie Yan, Ruqiang Bao, Yong Huang, A N Caruso, Syed B Qadri, Cerasela Zoica Dinu, Douglas B Chrisey 2010 J. Phys. Chem. C 114 3869
[11] Hongqiang Wang, Naoto Koshizaki, Liang Li 2011 Adv. Mater. 23 1865
[12] Zhu D H, Ni X W, Chen J P, Zhang H C 2011 Spectrosc Spec Anal 31 319 (in Chinese) [朱德华, 倪晓武, 陈建平, 张宏超 2011 光谱学与光谱分析 31 319]
[13] Lin Z X, Li J, Lu J D, Liu L M 2009 J. Huazhong Univ. of Sci. & Tech. (Natural Science Edition) 37 17 (in Chinese) [林兆祥, 李捷, 陆继东, 刘林美 2009 华中科技大学学报 (自然科学版) 37 17]
[14] Chen J Z, Zhao S R, Wei Y H, Guo Q L, Huai S F 2005 Spectrosc Spec Anal 25 1693 (in Chinese) [陈金忠, 赵书瑞, 魏艳红, 郭庆林, 怀素芳 2005 光谱学与光谱分析 25 1693]
[15] Aguilera J A, Bengoechea J, Aragón C 2004 Spectrochimica Acta B 59 461
[16] Aguilera J A, Aragón C 2008 Spectrochimica Acta Part B 63 793
[17] Li J, Lu J D, Lin Z X, Gong S S, Xie C L, Chang L, Yang L F, Li P Y 2009 Optics & Laser Technology 41 907
[18] Dong Hyoung Lee, Tae Hyeong Kim, Euo Chang Jung, Jong II Yun 2011 Appl Phys A 104 863
[19] Cheng J, Perrie W, Sharp M, Edwardson S P, Semaltianos N G 2009 Appl. Phys. A 95 739
[20] Yuan B, Gong Z B, Shen S B 1999 Laser Journal 20 33 (in Chinese) [袁斌, 龚知本, 沈书泊 1999 激光杂志 20 33]
[21] Niinomi M 2003 Biomaterial 24 2673
[22] Griem H R 1964 Plasma Spectroscopy, (New York: McGraw-Hill)
[23] Chen M, Liu X D, Yang X M, Zhao M W, Sun Y M, Qi H J, Chen X F, Xu X G 2008 Phys. Lett. A 372 5891
[24] Tankosić D, Popović L, Dimitrijević M 2001 Atomic Data and Nuclear Data Tables 77 277
[25] Ying M J 2003 Ph. D. Dissertation (Jinan: Shandong University) (in Chinese) [英敏菊 2003 博士学位论文 (济南: 山东大学)]
[26] Chen M, Liu X D, Zhao M W, Sun Y M 2009 Opt. Lett. 34 2682
[27] Monge E M, Aragón C, Aguilera J A 1999 Appl. Phys. A 69 S691
[28] Aragón C, Aguilera J A 2008 J. Appl. Phys 103 01331
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