The Breakdown Phenomena in Micrometer Scale Direct-Current Gas Discharges

Radmilović-Radjenović, M.; Radjenović, B.; Matejčik, Š.; Klas, M.
January 2014
Plasma Chemistry & Plasma Processing;Jan2014, Vol. 34 Issue 1, p55
Academic Journal
This paper reports on experimental and theoretical studies of the direct current breakdown voltage characteristics for several gases (argon, nitrogen, helium, hydrogen, dry air, oxygen and carbon dioxide) in discharges with parallel-plane electrodes separated from 1 to 100 μm. The breakdown phenomena have been discussed in terms of field emission of electrons from the cathode. Based on the measured breakdown voltage curves, realistic values of the effective yields and the field emission thresholds for considered gases have been estimated. It was found that the secondary electron emission due to high electric field generated in microgaps depends primarily on the electric field E leading directly to the violation of the Paschen's law. The effective yields due to the field emission for all gases are determined for the first time. Experimental data are supported by the theoretical predicitions that suggest departure from the scaling law and a flattening of the Paschen curves at higher pressures. The obtained results may provide better understending of the breakdown phenomena in microgaps.


Related Articles

  • Breakdown Phenomena in Water Vapor Microdischarges. Radmilović-Radjenović, M.; Radjenović, B.; Savić, M. // Acta Physica Polonica, A.;May2010, Vol. 117 Issue 5, p752 

    The gas breakdown at the large gap sizes is reasonably well understood. However, the breakdown phenomenon in microgaps is still not sufficiently explored. The high electric fields realized in small gaps combined with the lowering of the potential barrier, seen by the electrons in the cathode as...

  • Contactless Method for Studying the Parameters of the Electrode Region of an RF Discharge. Aleksandrov, A. F.; Ryaby, V. A.; Savinov, V. P.; Yakunin, V. G. // Plasma Physics Reports;Dec2002, Vol. 28 Issue 12, p1001 

    A nonintrusive contactless method for studying the parameters of the electrode region of a capacitive low-pressure RF discharge is proposed. The method involves the measurements of dc and ac electric voltages at the elements of the discharge circuit with subsequent calculations of both the...

  • Effect of the dc field on the near-surface plasma of a highly nonuniform microwave discharge. Lebedev, Yu.; Yusupova, E. // Plasma Physics Reports;Aug2012, Vol. 38 Issue 8, p620 

    The effect of the dc electric field on the near-surface plasma of an electrode microwave discharge at pressures of 1-5 Torr was studied by the emission spectroscopy method. It is shown that the dc field weakly affects the vibrational distribution of nitrogen molecules in the CΠ state, but...

  • Prebreakdown Phase of an Interelectrode Discharge in Water. Anpilov, A. M.; Barkhudarov, E. M.; Kop'ev, V. A.; Kossy&ibreve;, I. A.; Silakov, V. P.; Taktakishvili, M. I.; Temchin, S. M. // Plasma Physics Reports;Jul2004, Vol. 30 Issue 7, p632 

    Results are presented from experimental studies of the prebreakdown phase of an electric discharge between point (anode) and plane (cathode) electrodes immersed in water with different initial conductivity. When a high-voltage pulse is applied, the induced conductivity is detected in the...

  • Addressing the Lower Limit of Breakdown Delay Time in Vacuum. Emel’yanov, A. A.; Emel’yanova, E. A. // Technical Physics Letters;Nov2006, Vol. 32 Issue 11, p942 

    Based on the Joule mechanism of vacuum breakdown initiation, the dependence of a pulsed electric strength on the high-voltage pulse duration at a finite rate of electric field buildup in the vacuum gap is calculated. The results of calculations are confirmed by experimental data available for...

  • An analytical formulation for the modified Paschen's curve. Tirumala, Rakshit; Go, David B. // Applied Physics Letters;10/11/2010, Vol. 97 Issue 15, p151502 

    The modified Paschen's curve describes the gaseous breakdown potential (voltage) in microscale gaps, when deviations from the traditional Paschen's curve occur [F. Paschen, Ann. Phys. 273, 69 (1889)]. The deviation is due to ion-enhanced field emission that occurs in the high electric field of...

  • A model of a dc silane discharge. Koch, D. J.; Hitchon, W. N. G. // Journal of Applied Physics;10/15/1991, Vol. 70 Issue 8, p4139 

    Presents a study that described a novel approach to modeling chemically active direct current discharges and its application to silane. Methods for determining the electric field; Calculation of particle motion; Results of the electron motion calculation.

  • Field emission from multiwall carbon nanotubes in gas for producing microplasma discharge. Zou, Q.; Wang, M. Z.; Yang, Y. L. // Journal of Applied Physics;Jul2009, Vol. 106 Issue 1, p13305 

    Electron field emission (FE) from multiwall carbon nanotubes (CNTs) in gas (Ar and air) for producing microplasma discharge was measured in a scanning electron microscope. The results showed that the FE properties of the CNTs were stable in Ar and air gases when the FE threshold voltages were...

  • Lead-free surge arrester.  // Electronics Weekly;2/18/2004, Issue 2134, p32 

    Lead-free gas-tube surge arresters to protect items from overvoltages are available from Wickmann Components. The 2-electrode versions include the A50x series with withstand ratings of up to 5kA, A851 series with up to 200A follow-on current, A841 with DC breakdown voltage rating of up to 4500V...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics