基于激光诱导荧光法诊断大气压低温等离子体射流中OH自由基和O原子的时空分布

Abstract
Figure/Table
References
Related Citation (2)

Download: PDF (43253 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The method of traditional optical emission spectroscopy is not suitable for the quantitative measurements of the density of OH radical and O atom in low temperature plasma jets at atmospheric pressure. Thus, this paper applied the single-photon laser induced fluorescence (LIF) and two-photon absorption laser induced fluorescence (TALIF). The plasma jet with needle-cylinder electrode structure was excited by nanosecond pulsed power supply. ①OH radical and O atom in the plasma jet have a lifetime of 1 ms and 3ms, respectively. They are much longer than the duration time of pulse discharge. ②By fitting the decay curve of fluorescence intensity of OH radical vs time, the absolute density of OH radical is estimated to be 10¹²~10¹³cm^-3. ③The densities of both active species decrease monotonically with the increase of the axial distance along the jet. However, it's surprising to observe that there are still a large amount of active species at even several cm far away from the jet nozzle. ④The increased excitation frequency and pulse voltage result in the increased density of active species. Moreover, with the increase of the concentration of H₂O impurities in helium gas, OH radical density decreases after reaching a maximum value at 2.7×10¹³cm^-3 for H₂O concentration of 120 ppm. The behavior of O atom density shows the same tendency with the increase of O₂ percentage in helium. The inflection point corresponding to the peak density of O atom occurs at the O₂ percentage of 0.5%. This study provides an important scientific basis for regulation and optimization of the densities of OH radicals and O atom in low temperature plasma jets.

Key words： Atmospheric-pressure low-temperature plasma jets, laser induced fluorescence, active species, plasma medicine, OH radicals, O atom, plasma activity

Received: 29 May 2016 Published: 02 May 2017

PACS:

TM835.4

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Wu Shuqun
	Dong Xi
	Pei Xuekai
	Yue Yuanfu
	Lu Xinpei

Cite this article:

Wu Shuqun,Dong Xi,Pei Xuekai等. Laser Induced Fluorescence Diagnostics of the Temporal and Spatial Distribution of OH Radicals and O Atom in a Low Temperature Plasma Jet at Atmospheric Pressure[J]. Transactions of China Electrotechnical Society, 2017, 32(8): 82-94.

URL:

https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I8/82

[1] Shao T, Yang W, Zhang C, et al. Enhanced surface flashover strength in vacuum of polymethylmeth- acrylate by surface modification using atmospheric- pressure dielectric barrier discharge[J]. Applied Physics Letters, 2014, 105(7): 071607-071607(5).
[2] 丁正方, 方志, 许靖. 四氟化碳含量对大气压Ar等离子体射流放电特性的影响[J]. 电工技术学报, 2016, 31(7): 159-165.
Ding Zhengfang, Fang Zhi, Xu Jing. Influences of CF 4 content on discharge characteristics of argon plasma jet under atmospheric pressure[J]. Transa- ctions of China Electrotechnical Society, 2016, 31(7): 159-165.
[3] 周亦骁, 方志, 邵涛. Ar/O 2 和Ar/H 2 O中大气压等离子体射流放电特性的比较[J]. 电工技术学报, 2014, 29(11): 229-238.
Zhou Yixiao, Fang Zhi, Shao Tao. Comparison of discharge characteristics of atmospheric pressure plasma jet in Ar/O 2 and Ar/H 2 O mixtures[J]. Transactions of China Electrotechnical Society, 2014, 29(11): 229-238.
[4] 张若兵, 苏善诚, 姜雨泽, 等. 等离子体射流对染污高温硫化硅橡胶憎水特性的影响[J]. 高电压技术, 2015, 41(1): 262-267.
Zhang Ruobing, Su Shancheng, Jiang Yuze, et al. Effect of plasma jet on hydrophobicity of conta- minated high temperature vulcanization silicone rubber[J]. High Voltage Engineering, 2015, 41(1): 262-267.
[5] Chen Q, Li J, Li Y. A review of plasma-liquid interactions for nanomaterial synthesis[J]. Journalof Physics D-Applied Physics, 2015, 48(42): 424005- 424005-26.
[6] Laroussi M. Low-temperature plasma jet for biomedical applications: a review[J]. IEEE Transa- ctions on Plasma Science, 2015, 43(3): 703-712.
[7] Keidar M. Plasma for cancer treatment[J]. Plasma Sources Science & Technology, 2015, 24(3): 033001.
[8] Wu S, Cao Y, Lu X. The state of the art of applications of atmospheric-pressure nonequilibrium plasma jets in dentistry[J]. IEEE Transactions on Plasma Science, 2016, 44(2): 134-151.
[9] 卢新培. 等离子体射流及其医学应用[J]. 高电压技术, 2011, 37(6): 1416-1425.
Lu Xinpei. Plasma jets and their biomedical appli- cation[J]. High Voltage Engineering, 2011, 37(6): 1416-1425.
[10] Lu X, Jiang Z, Xiong Q, et al. An 11 cm long atmospheric pressure cold plasma plume for applications of plasma medicine[J]. Applied Physics Letters, 2008, 92: 081502(2).
[11] 吴淑群, 聂兰兰, 卢新培. 大气压非平衡等离子体射流[J]. 高电压技术, 2015, 41(8): 2602-2624.
Wu Shuqun, Nie Lanlan, Lu Xinpei. Atmospheric- pressure non-equilibrium plasma jets[J]. High Voltage Engineering, 2015, 41(8): 2602-2624.
[12] Lu X, Wu S. On the active species concentrations of atmospheric pressure nonequilibrium plasma jets[J]. IEEE Transactions on Plasma Science, 2013, 41(8): 2313-2326.
[13] Reuter S, Tresp H, Wende K, et al. From RONS to ROS: tailoring plasma jet treatment of skin cells[J]. IEEE Transactions on Plasma Science, 2012, 40(11): 2986-2993.
[14] Graves D B. The emerging role of reactive oxygen and nitrogen species in redox biology and some implications for plasma applications to medicine and biology[J]. Journal of Physics D-Applied Physics, 2012, 45(26): 263001-263042(42).
[15] von Woedtke T, Reuter S, Masur K, et al. Plasmas for medicine[J]. Physics Reports-Review Section of Physics Letters, 2013, 530(4): 291-320.
[16] 熊紫兰, 卢新培, 曹颖光. 等离子体医学[J]. 中国科学: 技术科学, 2011, 41(10): 1279-1298.
Xiong Zilan, Lu Xinpei, Cao Yingguang. Plasma medical science[J]. Science China: Science Technology, 2011, 41(10): 1279-1298.
[17] Xiong Q, Lu X P, Ostrikov K, et al. Pulsed DC-and sine-wave-excited cold atmospheric plasma plumes: a comparative analysis[J]. Physics of Plasmas, 2010, 17(4): 043506(8).
[18] Kim S J, Chung T H, Bae S H, et al. Bacterial inactivation using atmospheric pressure single pin electrode microplasma jet with a ground ring[J]. Applied Physics Letters, 2009, 94(14): 141502- 141502(3).
[19] Walsh J L, Kong M G. Contrasting characteristics of linear-field and cross-field atmospheric plasma jets[J]. Applied Physics Letters, 2008, 93(11): 111501(3).
[20] Reuter S, Winter J, Schmidt-Bleker A, et al. Atomic oxygen in a cold argon plasma jet: TALIF spectroscopy in ambient air with modelling and measurements of ambient species diffusion[J]. Plasma Sources Science & Technology, 2012, 21(2): 024005-024005(3).
[21] Pei X, Lu Y, Wu S, et al. A study on the temporally and spatially resolved OH radical distribution of a room-temperature atmospheric-pressure plasma jet by laser-induced fluorescence imaging[J]. Plasma Sources Science & Technology, 2013, 22(2): 025023- 025023(6).
[22] Jiang C, Carter C. Absolute atomic oxygen density measurements for nanosecond-pulsed atmospheric- pressure plasma jets using two-photon absorption laser-induced fluorescence spectroscopy[J]. Plasma Sources Science & Technology, 2014, 23(6): 065006- 065006(10).
[23] Yonemori S, Nakagawa Y, Ono R, et al. Measure- ment of OH density and air-helium mixture ratio in an atmospheric-pressure helium plasma jet[J]. Journal of Physics D-Applied Physics, 2012, 45(22): 225202.
[24] Srivastava N, Wang C. Effects of water addition on OH radical generation and plasma properties in an atmospheric argon microwave plasma jet[J]. Journal of Applied Physics, 2011, 110(5): 053304-053304(5).
[25] Reuter S, Sousa J S, Stancu G D, et al. Review on VUV to MIR absorption spectroscopy of atmospheric pressure plasma jets[J]. Plasma Sources Science & Technology, 2015, 24(5): 054001(41).
[26] Lu X, Naidis G V, Laroussi M, et al. Reactive species in non-equilibrium atmospheric-pressure plasmas: generation, transport and biological effects[J]. Physics Reports, 2016, 630: 1-84.
[27] Yang H, Feng C, Gao L, et al. Average OH density in alternating current dielectric barrier discharge by laser-induced fluorescence technique[J]. Japanese Journal of Applied Physics, 2015, 54(10): 106201.
[28] 刘忠伟, 赵国利, 王健, 等. 介质阻挡放电等离子体中OH自由基的光腔衰荡光谱原位诊断[J]. 核聚变与等离子体物理, 2008, 28(2): 167-171.
Liu Zhongwei, Zhao Guoli, Wang Jian, et al. In situ measurements of OH radicals in dielectric barrier discharge plasma with cw-cavity ring-down spectros- copy[J]. Nuclear Fusion and Plasma Physics, 2008, 28(2): 167-171.
[29] Xiong Q, Nikiforov A Y, Li L, et al. Absolute OH density determination by laser induced fluorescence spectroscopy in an atmospheric pressure RF plasma jet[J]. The European Physical Journal D, 2012, 66(11): 1-8.
[30] Lu X, Jiang Z, Xiong Q, et al. A single electrode room-temperature plasma jet device for biomedical applications[J]. Applied Physics Letters, 2008, 92(15): 151504-151504(3).
[31] Dilecce G, Martini L M, Tosi P, et al. Laser induced fluorescence in atmospheric pressure discharges[J]. Plasma Sources Science & Technology, 2015, 24(3): 034007(5).
[32] Dilecce G, Ambrico P F, Simek M, et al. LIF diagnostics of hydroxyl radical in atmospheric pressure He-H 2 O dielectric barrier discharges[J]. Chemical Physics, 2012, 398(7): 142-147.
[33] Pei X, Wu S, Xian Y, et al. On OH density of an atmospheric pressure plasma jet by laser-induced fluorescence[J]. IEEE Transactions on Plasma Science, 2014, 42(51): 1206-1210.
[34] Naidis G V. Modelling of OH production in cold atmospheric-pressure He-H 2 O plasma jets[J]. Plasma Sources Science & Technology, 2013, 22(3): 035015(6).
[35] Lu X, Naidis G V, Laroussi M, et al. Guided ionization waves: theory and experiments[J]. Physics Reports-Review Section of Physics Letters, 2014, 540(3): 123-166.
[36] Xiong Q, Lu X, Xian Y, et al. Experimental investigations on the propagation of the plasma jet in the open air[J]. Journal of Applied Physics, 2010, 107(7): 073302(6).
[37] Lu X, Ye T, Cao Y, et al. The roles of the various plasma agents in the inactivation of bacteria[J]. Journal of Applied Physics, 2008, 104(5): 053309(5).
[38] Nakagawa Y, Ono R, Oda T. Density and temperature measurement of OH radicals in atmospheric-pressure pulsed corona discharge in humid air[J]. Journal of Applied Physics, 2011, 110(7): 073304(7).
[39] Verreycken T, van der Horst R M, Baede A H F M, et al. Time and spatially resolved LIF of OH in a plasma filament in atmospheric pressure He-H 2 O[J]. Journal of Physics D: Applied Physics, 2012, 45(4): 045205- 045205(8).
[40] Jeong J Y, Park J, Henins I, et al. Reaction chemistry in the afterglow of an oxygen-helium, atmospheric- pressure plasma[J]. Journal of Physical Chemistry A, 2000, 104(34): 8027-8032.
[41] 方志, 钱晨, 姚正秋. 大气压环环电极结构射流放电仿真模型建立及仿真研究[J]. 电工技术学报, 2016, 31(7): 218-228.
Fang Zhi, Qian Chen, Yao Zhengqiu. The model and simulation studies for ring-ring electrode structure jet discharge at atmospheric pressure[J]. Transactions of China Electrotechnical Society, 2016, 31(7): 218- 228.
[42] Knake N, Reuter S, Niemi K, et al. Absolute atomic oxygen density distributions in the effluent of a microscale atmospheric pressure plasma jet[J]. Journal of Physics D: Applied Physics, 2008, 41(19): 194006.