Three distinct modes in a surface micro-discharge in atmospheric pressure He + N2 mixtures

被引:4
|
作者
Li, Dong [1 ]
Liu, Dingxin [1 ]
He, Tongtong [1 ]
Li, Qiaosong [1 ]
Wang, Xiaohua [1 ]
Kong, Michael G. [1 ,2 ,3 ]
机构
[1] Xi An Jiao Tong Univ, Ctr Plasma Biomed, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China
[2] Old Dominion Univ, Frank Reidy Ctr Bioelect, Norfolk, VA 23508 USA
[3] Old Dominion Univ, Dept Elect & Comp Engn, Norfolk, VA 23529 USA
基金
美国国家科学基金会;
关键词
DIELECTRIC BARRIER DISCHARGE; PLASMA; EMISSION; NITROGEN; HELIUM; DIAGNOSTICS; FILAMENTARY; PHYSICS; DBD;
D O I
10.1063/1.4935914
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
A surface micro-discharge in atmospheric pressure He + N-2 mixtures is studied in this paper with an emphasis on the discharge modes. With the N-2 admixture increasing from 0.1% to 20%, the discharge evolves from a spatially diffuse mode to a filamentary mode during positive half-cycles of the applied voltage. However during the negative half-cycles, an additional patterned mode emerges between the diffuse and the filamentary modes, which has not been reported before to exist in surface micro-discharges. In the diffuse and patterned modes, the plasmas cover almost the entirety of the mesh area during one cycle after plasma ignition in all mesh elements, and the discharge power increases linearly with the applied voltage. In contrast, plasma coverage of the mesh area is only partial in the filamentary mode and the plasma is more unstable with the discharge power increasing exponentially with the applied voltage. As the surface micro-discharge evolves through the three modes, the density of excited species changes significantly, for instance, the density of N-2(+)(B) drops by similar to 20-fold from [N-2] = 0.2% to 20%. The N-2(+) (B) is predicted to be generated mainly through successive processes of Penning ionization by helium metastables and electron-impact excitation of N-2(+)(X), the latter is most responsible for the density decrease of N-2(+)(B) because much more N-2(+)(X) is converted to N-4(+)(X) as the increase of N-2 fraction. Also, the electron density and electron temperature decrease with the discharge mode transition. (C) 2015 AIP Publishing LLC.
引用
收藏
页数:9
相关论文
共 50 条
  • [21] Characteristics of argon barrier micro-discharge in various operation modes excited by a saw-tooth voltage at atmospheric pressure
    Saifutdinova, A. A.
    Saifutdinov, A. I.
    SCIENTIFIC TECHNICAL CONFERENCE ON LOW TEMPERATURE PLASMA DURING THE DEPOSITION OF FUNCTIONAL COATINGS (LTP COATINGS 2017), 2018, 1058
  • [22] Modelling of a pulsed discharge in N2 gas at atmospheric pressure
    Tanaka, Y
    Sakuta, T
    JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1999, 32 (24) : 3199 - 3207
  • [23] Temporal evolution of electron excited temperature in micro-discharge in argon at atmospheric pressure
    Dong, LF
    Ran, JX
    Mao, ZG
    ACTA PHYSICA SINICA, 2005, 54 (05) : 2167 - 2171
  • [24] Characterization of atmospheric-pressure ac micro-discharge in He-N2 mixture using time- and space-resolved optical emission spectroscopy
    Pothiraja, Ramasamy
    Ruhrmann, Cornelia
    Engelhardt, Max
    Bibinov, Nikita
    Awakowicz, Peter
    JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2013, 46 (46)
  • [25] Streamer propagation dynamics in a nanosecond pulsed surface dielectric barrier discharge in He/N2 mixtures
    Hubner, Gerrit
    Wilczek, Sebastian
    Schoeneweihs, Nils
    Filla, Dominik
    Mussenbrock, Thomas
    Korolov, Ihor
    JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2025, 58 (06)
  • [26] Experimental and computational investigations of electron dynamics in micro atmospheric pressure radio-frequency plasma jets operated in He/N2 mixtures
    Bischoff, L.
    Huebner, G.
    Korolov, I
    Donko, Z.
    Hartmann, P.
    Gans, T.
    Held, J.
    Schulz-von der Gathen, V
    Liu, Y.
    Mussenbrock, T.
    Schulze, J.
    PLASMA SOURCES SCIENCE & TECHNOLOGY, 2018, 27 (12):
  • [27] Numerical modeling of a He-N2 capillary surface wave discharge at atmospheric pressure
    Petrov, GM
    Matte, JP
    Pérés, I
    Margot, J
    Sadi, T
    Hubert, J
    Tran, KC
    Alves, LL
    Loureiro, J
    Ferreira, CM
    Guerra, V
    Gousset, G
    PLASMA CHEMISTRY AND PLASMA PROCESSING, 2000, 20 (02) : 183 - 207
  • [28] Transport phenomena in an atmospheric-pressure townsend discharge fed by N2/N2O/HMDSO mixtures
    Enache, Ionut
    Caquineau, Hubert
    Gherardi, Nicolas
    Paulmier, Thierry
    Maechler, Louison
    Massines, Francoise
    PLASMA PROCESSES AND POLYMERS, 2007, 4 (09) : 806 - 814
  • [29] On the measurement of N2(A3Σu+) metastable in N2 surface-dielectric barrier discharge at atmospheric pressure
    Ambrico, P. F.
    Simek, M.
    Dilecce, G.
    De Benedictis, S.
    PLASMA CHEMISTRY AND PLASMA PROCESSING, 2008, 28 (03) : 299 - 316
  • [30] On the Measurement of N2(A3Σu+) Metastable in N2 Surface-Dielectric Barrier Discharge at Atmospheric Pressure
    P. F. Ambrico
    M. Šimek
    G. Dilecce
    S. De Benedictis
    Plasma Chemistry and Plasma Processing, 2008, 28 : 299 - 316