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A series of experiments is designed in order to investigate the expansion and movement characteristics of atoms and ions of the plasma in the presence of ambient gas. To obtain two-dimensional spectral images of different components in the plasma, a nanosecond laser with a wavelength of 532 nm is used to ablate an aluminum sample, forming the plasma. A C-T type of tri-grating monochromator with an emICCD detector is used for diagnosing the plasma chronologically. At the same time, a 2400 gmm-1 grating is used to replace the narrowband filter for imaging diagnosis of different components in vacuum. The spectrally resolved images of Al I (396.1 nm), Al Ⅱ (466.3 nm), and Al Ⅲ (447.9 nm) in aluminum plasma are obtained. Besides, the spectral images of plasma components under different ambient pressures are collected to explore the influence of background gas on plasma evolution. The results show that in the plasma formation process, the ion component is distributed in the anterior segment of the plume relative to the atom component, and its angular distribution is smaller. The vacuum expansion rates of atoms and ions are all on the order of 104 ms-1. The movement speed of the ion component in the plasma is higher than that of atom component, and its movement speed increases with the valence of the ion increasing. In the energy density range used in this experiment, the velocity varies slightly with the laser energy. For the neutral atom, the velocity increases obviously as the energy increases. With the expansion process progressing, each component of the plume advances along the direction normal to the sample surface, and the emission intensity gradually decreases, the corresponding plume density and its temperature also decrease. With the ambient pressure increasing, the movement characteristics of each component are obviously different from those under high vacuum. At a pressure higher than 1 Pa, the plasma and the ambient gas are infiltrated with each other, vignetting appears in the front of the plume, disturbance occurs, causing the expansion speed to decrease. In addition, the plasma plume shrinks due to the increase of pressure, and the probability of collision with the background gas increases, so that the plume emission intensity is strengthened and the plasma lifetime is prolonged. The results of the new diagnosis method and the experimental results demonstrated in this study can provide a reference for the study of plasma component dynamic process.
[1] Emara E M, Imam H, Hassan M A, Elnaby S H 2013 Talanta 117 176
[2] Pedarnig J D, Kolmhofer P, Huber N, Praher B, Heitz J, Rssler R 2013 Appl. Phys. A: Mater. 112 105
[3] Srungaram P K, Ayyalasomayajula K K, Fang Y Y, Singh J P 2013 Spectrochim. Acta B 87 108
[4] Wu J, Wei W, Yang Z, Li X 2014 IEEE Trans. Plasma Sci. 42 2586
[5] Harilal S, Bindhu C, Tillack M, Najmabadi F, Gaeris A 2003 J. Appl. Phys. 93 2380
[6] Sankar P, Nivas J J J, Smijesh N, Tiwari G K, Philip R 2017 J. Anal. Atom. Spectrom. 32 1177
[7] Hahn D W, Omenetto N 2010 Appl. Spectrosc. 64 335
[8] Ma, Q L, Motto-Ros V, Lei W Q, Boueri M, Bai X S, Zheng L J, Zeng H P, Yu J 2010 Spectrochim. Acta B 65 896
[9] Bogaerts A, Chen Z, Bleiner D 2006 J. Anal. Atom. Spectrom. 21 384
[10] Bogaerts A, Chen Z 2004 J. Anal. Atom. Spectrom. 19 1169
[11] Chen Z, Bleiner D, Bogaerts A 2006 J. Appl. Phys. 99 063304
[12] Zheng P C, Liu H D, Wang J M, Yu B, Yang R, Zhang B, Wang X M 2014 Chin. J. Laser 41 1015001 (in Chinese) [郑培超, 刘红弟, 王金梅, 于斌, 杨蕊, 张斌, 王晓蒙 2014 中国激光 41 1015001]
[13] Wang X L, Zhang N, Zhao Y B, Li Z L, Zhai H C, Zhu X N 2008 Acta Phys. Sin. 57 354 (in Chinese) [王晓雷, 张楠, 赵友博, 李智磊, 翟宏琛, 朱晓农 2008 57 354]
[14] Freeman J R, Harilal S S, Diwakar P K, Verhoff B, Hassanein A 2013 Spectrochim. Acta B 87 43
[15] Li X Y, Lin Z X, Liu Y Y, Chen Y Q, Gong S S 2004 Acta Opt. Sin. 24 1051 (in Chinese) [李小银, 林兆祥, 刘煜炎, 陈扬锓, 龚顺生 2004 光学学报 24 1051]
[16] Guo K M, Gao X, Hao Z Q, Lu Y, Sun C K, Lin J Q 2012 Acta Phys. Sin. 61 075212 (in Chinese) [郭凯敏, 高勋, 郝作强, 鲁毅, 孙长凯, 林景全 2012 61 075212]
[17] Miyabe M, Oba M, Limura H, Akaoka K, Khumarni A, Kato M, Wakaida I 2015 Spectrochim. Acta B 110 101
[18] Bai X S, Ma Q L, Perrier M, Motto-Ros V, Sabourdy D, Nguyen L, Jalocha A, Yu J 2013 Spectrochim. Acta B 87 27
[19] NIST Atomic Spectra Database Lines Form https://physics.nist.gov/PhysRefData/ASD/lines_form.html [2018-4-2]
[20] Bulgakova N M, Bulgakov A V, Bobrenok O F 2000 Phys. Rev. E 62 5624
[21] Wang X, Zhang S, Cheng X, Zhu E, Hang W, Huang B 2014 Spectrochim. Acta B 99 101
[22] Torrisi L, Caridi F, Margarone D, Borrielli A 2008 Appl. Surf. Sci. 254 2090
[23] Tang X S, Li C Y, Zhu G L, Ji X H, Feng E Y, Zhang W J, Cui Z F 2004 Chin. J. Laser 31 687 (in Chinese) [唐晓闩, 李春燕, 朱光来, 季学韩, 凤尔银, 张为俊, 崔执凤 2004 中国激光 31 687]
[24] Chen X, Bian B M, Shen Z H, Lu J, Ni X W 2003 Micro. Opt. Techn. Lett. 38 75
[25] Sharma A K, Thareja R K 2005 Appl. Surf. Sci. 243 68
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[1] Emara E M, Imam H, Hassan M A, Elnaby S H 2013 Talanta 117 176
[2] Pedarnig J D, Kolmhofer P, Huber N, Praher B, Heitz J, Rssler R 2013 Appl. Phys. A: Mater. 112 105
[3] Srungaram P K, Ayyalasomayajula K K, Fang Y Y, Singh J P 2013 Spectrochim. Acta B 87 108
[4] Wu J, Wei W, Yang Z, Li X 2014 IEEE Trans. Plasma Sci. 42 2586
[5] Harilal S, Bindhu C, Tillack M, Najmabadi F, Gaeris A 2003 J. Appl. Phys. 93 2380
[6] Sankar P, Nivas J J J, Smijesh N, Tiwari G K, Philip R 2017 J. Anal. Atom. Spectrom. 32 1177
[7] Hahn D W, Omenetto N 2010 Appl. Spectrosc. 64 335
[8] Ma, Q L, Motto-Ros V, Lei W Q, Boueri M, Bai X S, Zheng L J, Zeng H P, Yu J 2010 Spectrochim. Acta B 65 896
[9] Bogaerts A, Chen Z, Bleiner D 2006 J. Anal. Atom. Spectrom. 21 384
[10] Bogaerts A, Chen Z 2004 J. Anal. Atom. Spectrom. 19 1169
[11] Chen Z, Bleiner D, Bogaerts A 2006 J. Appl. Phys. 99 063304
[12] Zheng P C, Liu H D, Wang J M, Yu B, Yang R, Zhang B, Wang X M 2014 Chin. J. Laser 41 1015001 (in Chinese) [郑培超, 刘红弟, 王金梅, 于斌, 杨蕊, 张斌, 王晓蒙 2014 中国激光 41 1015001]
[13] Wang X L, Zhang N, Zhao Y B, Li Z L, Zhai H C, Zhu X N 2008 Acta Phys. Sin. 57 354 (in Chinese) [王晓雷, 张楠, 赵友博, 李智磊, 翟宏琛, 朱晓农 2008 57 354]
[14] Freeman J R, Harilal S S, Diwakar P K, Verhoff B, Hassanein A 2013 Spectrochim. Acta B 87 43
[15] Li X Y, Lin Z X, Liu Y Y, Chen Y Q, Gong S S 2004 Acta Opt. Sin. 24 1051 (in Chinese) [李小银, 林兆祥, 刘煜炎, 陈扬锓, 龚顺生 2004 光学学报 24 1051]
[16] Guo K M, Gao X, Hao Z Q, Lu Y, Sun C K, Lin J Q 2012 Acta Phys. Sin. 61 075212 (in Chinese) [郭凯敏, 高勋, 郝作强, 鲁毅, 孙长凯, 林景全 2012 61 075212]
[17] Miyabe M, Oba M, Limura H, Akaoka K, Khumarni A, Kato M, Wakaida I 2015 Spectrochim. Acta B 110 101
[18] Bai X S, Ma Q L, Perrier M, Motto-Ros V, Sabourdy D, Nguyen L, Jalocha A, Yu J 2013 Spectrochim. Acta B 87 27
[19] NIST Atomic Spectra Database Lines Form https://physics.nist.gov/PhysRefData/ASD/lines_form.html [2018-4-2]
[20] Bulgakova N M, Bulgakov A V, Bobrenok O F 2000 Phys. Rev. E 62 5624
[21] Wang X, Zhang S, Cheng X, Zhu E, Hang W, Huang B 2014 Spectrochim. Acta B 99 101
[22] Torrisi L, Caridi F, Margarone D, Borrielli A 2008 Appl. Surf. Sci. 254 2090
[23] Tang X S, Li C Y, Zhu G L, Ji X H, Feng E Y, Zhang W J, Cui Z F 2004 Chin. J. Laser 31 687 (in Chinese) [唐晓闩, 李春燕, 朱光来, 季学韩, 凤尔银, 张为俊, 崔执凤 2004 中国激光 31 687]
[24] Chen X, Bian B M, Shen Z H, Lu J, Ni X W 2003 Micro. Opt. Techn. Lett. 38 75
[25] Sharma A K, Thareja R K 2005 Appl. Surf. Sci. 243 68
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