O_2、CO_2、N_2对常压He多电流脉冲放电特性的影响
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摘要
为了研究少量的O_2、CO_2和N_2对常压He多电流脉冲放电的影响,分别对其放电时的电流电压波形、Lissa-jious图形和发射光谱进行了实验研究。结果表明:在外加电压不变的情况下,随着分别混入的O_2、CO_2和N_2流量的增加,每半个周期中电流脉冲的个数并没有改变,电流脉冲的峰宽却明显变窄,从μs量级变为ns量级,此时Lis-sajous图形显示辉光放电时第一个电流脉冲所需要的外加电压要比丝状放电时低的多,介质板上的积累电荷明显减少,放电逐渐从辉光放电过渡到丝状放电,其发射光谱表明,这主要是由于放电空间内的亚稳态He(2~3S)原子逐渐减少导致的。
Order to study the effect of a small amount of O_2,CO_2 and N_2 on the discharge of atmospheric He multi-current pulse discharge,the current and voltage waveforms,Lissajious patterns and emission spectra of the discharge were studied experimentally. The results show that under the condition of constant applied voltage,with the increase of O_2,CO_2 and N_2 flux respectively,the number of current pulses does not change,but the peak width of current pulse becomes narrower,from μs to ns. The Lissajous figure shows that the applied voltage required for the first current pulse in glow discharge is much lower than that in filamentary discharge and the accumulated charge on the dielectric plate decreased obviously. This shows the discharge gradually transitioned from glow discharge to filamentary discharge. Their emission spectra show that this is mainly due to the gradual decrease of metastable He(2~3S)atoms in the discharge space.
Order to study the effect of a small amount of O_2,CO_2 and N_2 on the discharge of atmospheric He multi-current pulse discharge,the current and voltage waveforms,Lissajious patterns and emission spectra of the discharge were studied experimentally. The results show that under the condition of constant applied voltage,with the increase of O_2,CO_2 and N_2 flux respectively,the number of current pulses does not change,but the peak width of current pulse becomes narrower,from μs to ns. The Lissajous figure shows that the applied voltage required for the first current pulse in glow discharge is much lower than that in filamentary discharge and the accumulated charge on the dielectric plate decreased obviously. This shows the discharge gradually transitioned from glow discharge to filamentary discharge. Their emission spectra show that this is mainly due to the gradual decrease of metastable He(2~3S)atoms in the discharge space.
引文
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[22]樊琰,李茹,李秋怡,等.NH3等离子体特性及表面改性PAN超滤膜[J].西安工程大学学报,2018,32(1):51-55.
[2]戴栋,宁文军,邵涛.大气压低温等离子体的研究现状与发展趋势[J].电工技术学报,2017,32(20):1-9.
[3]陈龙溪,郑磊,吴斌.氩气/空气辉光放电对聚乙烯薄膜的表面改性研究[J].真空科学与技术学报,2014,34(12):1315-1320.
[4]穆海宝,高唯,喻琳,等.介质阻挡电晕放电用于聚丙烯薄膜的表面改性[J].高电压技术,2014,40(7):2217-2223.
[5]高明,黄浩,黄逸凡,等.常压氩气等离子体对碳纤维表面亲水性改性研究[J].集成技术,2018,7(4):1-8.
[6]杨涛,倪新亮,金凡亚,等.低温氮、氧等离子体处理碳纤维/树脂复合材料[J].真空科学与技术学报,2015,35(10):1214-1219.
[7]Massines F,Segur P,Gherardi N,et al.Physics and chemistry in a glow dielectric barrier discharge at atmospheric pressure:diagnostics and modelling[J].Surface and Coatings Technology,2003,174(3):8-14.
[8]Golubovskii Y B,Maiorov V A,Behnke J,et al.Modelling of the homogeneous barrier discharge in helium at atmospheric pressure[J].J Phys D Appl Phys.2003,36(1):39-49.
[9]Akishev Y S,Dem A V,Karal V B,et al.Pulsed regime of the diffusive mode of a barrier discharge in helium[J].Plasma Phys Rep+,2001,27(2):164-171.
[10]Mangolini L,Orlov K,Kortshagen U,et al.Radial structure of a low-frequency atmospheric-pressure glow discharge in helium[J].Appl Phys Lett,2002,80(10):1722-1724.
[11]Radu I,Bartnikas R,Wertheimer M R,et al.Diagnostics and modelling of noble gas atmospheric pressure dielectric barrier discharges in homogeneous or diverging electric fields[J].JPhys D Appl Phys,2005,38(4):539-546.
[12]Wang D Z,Wang Y H,Liu C S,et al.Multipeak behavior and mode transition of a homogeneous barrier discharge in atmospheric pressure helium[J].Thin Solid Films,2006,506:384-388.
[13]郝艳捧,王晓蕾,阳林.大气压氦气介质阻挡多脉冲辉光放电的形成条件[J].电工技术学报,2009,24(9):28-32.
[14]刘耀阁.大气压惰性气体介质阻挡放电时间分辨发射光谱特性[D].广州:华南理工大学,2013.
[15]郝艳捧,刘耀阁,郑彬.大气压下氦气介质阻挡辉光放电过程中的Lissajous图形分析[J].高电压技术,2012,38(5):1025-1032.
[16]刘富成,王晓菲.大气压多脉冲介质阻挡均匀放电的数值模拟[J].河北大学学报(自然科学版),2018,38(3):232-238.
[17]Zhang Y,Gu B,Peng X W,et al.Experiment research on multiple current peaks and mode conversion of atmospheric pressure glow dielectric barrier discharge in helium[J].Thin solid films,2008,516:7547-7554.
[18]Zhang Y,Gu B,Wangw C,et al.Dynamics behavior of homogeneous dielectric barrier discharge at atmospheric pressure[J].J.Appl Phys,2009,106(2):023307.
[19]张燕,顾彪,王文春,等.常压He和N2均匀介质阻挡放电的伏安特性[J].物理学报,2009,58(8):5532-5538.
[20]Kanazawa S,Kogoma M,Okazaki S.et al.The improvement of the atmospheric-pressure glow plasma method and the deposition of organic films[J].Nuclear Inst Methods Phys Res,1989,B37(38):842-845.
[21]谢刚,郭牧林,徐俊,等.氩等离子体预处理纤维表面两步法制备聚丙烯螯合纤维[J].塑料,2017,46(5):56-61.
[22]樊琰,李茹,李秋怡,等.NH3等离子体特性及表面改性PAN超滤膜[J].西安工程大学学报,2018,32(1):51-55.