Exploration of a MgO cathode for improving the intensity of pulsed discharge plasma at atmosphere

He GUO (郭贺); Xiaomei YAO (姚晓妹); Jie LI (李杰); Nan JIANG (姜楠); Yan WU (吴彦)

doi:10.1088/2058-6272/aace9e

Plasma Science and Technology > 2018 > 20(10): 105404. > DOI: 10.1088/2058-6272/aace9e

He GUO (郭贺), Xiaomei YAO (姚晓妹), Jie LI (李杰), Nan JIANG (姜楠), Yan WU (吴彦). Exploration of a MgO cathode for improving the intensity of pulsed discharge plasma at atmosphere[J]. Plasma Science and Technology, 2018, 20(10): 105404. DOI: 10.1088/2058-6272/aace9e

Citation:

PDF (1240 KB)

Exploration of a MgO cathode for improving the intensity of pulsed discharge plasma at atmosphere

¹ Key Laboratory of Industrial Ecology and Environmental Engineering, MOE, Dalian University of Technology, Dalian 116024, People’s Republic of China
² School of Electrical Engineering, Dalian University of Technology, Dalian 116024, People’s Republic of China
³ School of Environmental Science & Technology, Dalian University of Technology, Dalian 116024, People’s Republic of China

Funds: The authors give thanks to National Natural Science Foun- dation Committee of China (No. 51477025) for the financial support of this work.

More Information

Received Date: March 25, 2018

Graphical Abstract

Abstract

Abstract

With regard to the lower density and energy of electrons in pulsed discharge plasma (PDP) at atmosphere, leading to the lower energy utilization of plasma, we propose a MgO cathode to enhance the plasma intensity according to field emission principle. The MgO cathode is prepared by an electro-depositing MgO film on a stainless steel plate. This way, the positive charges come to the cathode and accumulate on the surface of the MgO film, leading to the enhancement of the electric field intensity between the cathode and MgO film, and result in the strong emission of secondary electrons from the MgO cathode. As a result, the intensity of plasma can be enhanced. Herein, the effect of the MgO cathode on the intensity of PDP is investigated. It was shown that the discharge peak current was improved by 20% compared with that of without the MgO cathode. With increasing the MgO film thickness, discharge intensity, including the peak current, transforming charge and spectrum intensity first increased and then decreased. Higher enhancement of peak current, transforming charge and spectrum intensity were acquired with a higher peak voltage. Compared to a cathode without MgO film, the ozone production is higher with MgO cathode employed. The research proposes a novel approach for improving the intensity of discharge plasma, and also provides a reference for further application of PDP.
- discharge intensity,
- pulsed discharge plasma,
- MgO cathode,
- secondary electron emission

FullText(HTML)

References (29)

References

[1]	Kim H et al 2008 Plasma Sci. Technol. 10 53
[2]	Xu F et al 2009 J. Environ. Sci. 21 328
[3]	Ma S M et al 2017 Renew. Sust. Energ. Rev. 67 791
[4]	Yang L J 1983 Gas Discharge (Beijing: Science Press) (in Chinese)
[5]	Malter L 1936 Phys. Rev. 50 48
[6]	Dong B Y, Wu Y and Li J 2005 J. Dalian Univ. Technol. 45 157 (in Chinese)
[7]	Wang Q H et al 1998 Appl. Phys. Lett. 72 2912
[8]	Spindt C A 1968 J. Appl. Phys. 39 3504
[9]	Wang J A et al 1998 Mater. Lett. 35 317
[10]	Parkin S S P et al 2004 Nat. Mater. 3 862
[11]	Berkhan K et al 2003 Nucl. Instr. Meth. Phys. Res. A 515 185
[12]	Olesik J and Olesik Z 2009 Opt. Appl. 39 903
[13]	Olesik J and Ca?usiński B 1994 Thin Solid Films 238 271
[14]	Choi E H et al 1999 J. Appl. Phys. 86 6525
[15]	Aboelfotoh M O and Lorenzen J A 1977 J. Appl. Phys. 48 4754
[16]	Yu H K 2018 Thin Solid Films 653 57
[17]	Lim J Y et al 2003 J. Appl. Phys. 94 764
[18]	Punset C, Boeuf J P and Pitchford L C 1998 J. Appl. Phys. 83 1884
[19]	Lee J H et al 2003 Thin Solid Films 435 95
[20]	Kim R, Kim Y and Park J W 2000 Thin Solid Films 376 183
[21]	Kim Y S, Kim J K and Weber L F 2017 IEEE Trans. Electron Dev. 64 3252
[22]	Park C S et al 2017 Mol. Cryst. Liq. Cryst. 645 65
[23]	Cho S H et al 2015 ACS appl. Mater. Inter. 7 7559
[24]	Deng J et al 2014 Mater. Lett. 134 51
[25]	Shen Y S, Yi Z Q and Wang H 2004 J. Chin. Electron Microsc. Soc. 23 451
[26]	Molnar J P 1951 Phys. Rev. 83 940
[27]	Jiang N et al 2018 Chem. Eng. J. 350 19
[28]	Yao S L et al 2015 J. Electrostat. 75 35
[29]	?imek M, Pek?rek S and Prukner V 2010 Plasma Chem. Plasma Process. 30 607

[1]	Zebin WANG, Junbiao LIU, Aiguo CHEN, Dazheng WANG, Pengfei WANG, Li HAN. Optimization of electron beams for ion bombardment secondary emission electron gun[J]. Plasma Science and Technology, 2025, 27(3): 035501. DOI: 10.1088/2058-6272/ad9819
[2]	Chunxia LIANG (梁春霞), Ning WANG (王宁), Zhengchao DUAN (段正超), Feng HE (何锋), Jiting OUYANG (欧阳吉庭). Experimental investigations of enhanced glow based on a pulsed hollow-cathode discharge[J]. Plasma Science and Technology, 2019, 21(2): 25401-025401. DOI: 10.1088/2058-6272/aaef49
[3]	Mingming SUN (孙明明), Tianping ZHANG (张天平), Xiaodong WEN (温晓东), Weilong GUO (郭伟龙), Jiayao SONG (宋嘉尧). Plasma characteristics in the discharge region of a 20A emission current hollow cathode[J]. Plasma Science and Technology, 2018, 20(2): 25503-025503. DOI: 10.1088/2058-6272/aa8edb
[4]	Saravanan ARUMUGAM, Prince ALEX, Suraj Kumar SINHA. Feedback model of secondary electron emission in DC gas discharge plasmas[J]. Plasma Science and Technology, 2018, 20(2): 25404-025404. DOI: 10.1088/2058-6272/aa8e3f
[5]	N A ASHURBEKOV, K O IMINOV, O A POPOV, G S SHAKHSINOV. Current self-limitation in a transverse nanosecond discharge with a slotted cathode[J]. Plasma Science and Technology, 2017, 19(3): 35401-035401. DOI: 10.1088/2058-6272/19/3/035401
[6]	SHEN Yi (谌怡), ZHANG Huang (张篁), XIA Liansheng (夏连胜), LIU Xingguang (刘星光), PAN Haifeng (潘海峰), LV Lu (吕璐), YANG Anmin (杨安民), SHI Jinshui (石金水), ZHANG Linwen (章林文), DENG Jianjun (邓建军). Vacuum Outgassing Behavior of Carbon Nanotube Cathode with High-Intensity Pulsed Electron Emission[J]. Plasma Science and Technology, 2015, 17(2): 129-133. DOI: 10.1088/1009-0630/17/2/06
[7]	LIU Wenzheng(刘文正), WANG Hao(王浩), ZHANG Dejin(张德金), ZHANG Jian(张坚). Study on the Discharge Characteristics of a Coaxial Pulsed Plasma Thruster[J]. Plasma Science and Technology, 2014, 16(4): 344-351. DOI: 10.1088/1009-0630/16/4/08
[8]	Jongho SEON, Ensang LEE. Plasma Wall Potentials with Secondary Electron Emissions up to the Stable Space-Charge-Limited Condition[J]. Plasma Science and Technology, 2013, 15(11): 1093-1099. DOI: 10.1088/1009-0630/15/11/03
[9]	D. FUKUHARA, S. NAMBA, K. KOZUE, T. YAMASAKI, K. TAKIYAMA. Characterization of a Microhollow Cathode Discharge Plasma in Helium or Air with Water Vapor[J]. Plasma Science and Technology, 2013, 15(2): 129-132. DOI: 10.1088/1009-0630/15/2/10
[10]	DUAN Ping(段萍), LI Xi (李肸), SHEN Hongjuan (沈鸿娟), CHEN Long (陈龙), E Peng (鄂鹏). Characteristics of a Sheath with Secondary Electron Emission in the Double Walls of a Hall Thruster[J]. Plasma Science and Technology, 2012, 14(9): 837-841. DOI: 10.1088/1009-0630/14/9/12