Nonstationarity of diffusion-controlled surface-wave-sustained discharges in a cw regime

Marinov, K.; Shivarova, A.; Stoev, L.
August 2006
Physics of Plasmas;Aug2006, Vol. 13 Issue 8, p082110
Academic Journal
The theory of the cw regime of maintenance of surface-wave-sustained gas discharges developed up to now is for discharge production at a given frequency. A generalization of this theory is presented here by considering discharge maintenance by a narrow-band signal, the actual situation in the experiments. Discharge production in a diffusion-controlled regime is treated within the fluid plasma theory. The set of the equations is for the interrelated variations along the discharge length of the time-dependent envelope of the electric field maintaining the plasma and for the time-dependent plasma characteristics (plasma density, electron temperature, power Θ absorbed on average by an electron). The numerical results presented for the time-space variations of wave-field amplitude and plasma density describe the nonstationary state of the cw regime of discharge maintenance. Detailed analysis with deterministic signals (Gaussian and super-Gaussian pulses) superimposed on a stationary cw-power level demonstrate different types of nonlinear effects—self-steepening and spontaneous modulation near the pulse edge—which are reminiscent of phenomena known from the nonlinear optics. The results for discharge maintenance by a high-frequency power modulated by a narrow-band low-amplitude Gaussian noise are discussed in terms of discharge stability/instability. Relevance to experimental finding in surface-wave-sustained discharge is commented on.


Related Articles

  • An Investigation of the Cu-Ni Compound Cathode Materials Affecting on Transient Recovery Voltage. Arunrungrusmi, S.; Chaokamnerd, W.; Tanitteerapan, T.; Mungkung, N.; Yuji, T. // Proceedings of World Academy of Science: Engineering & Technolog;May2009, Vol. 53, p753 

    The purpose of this research was to analyze and compare the instability of a contact surface between Copper and Nickel an alloy cathode in vacuum, the different ratio of Copper and Copper were conducted at 1%, 2% and 4% by using the cathode spot model. The transient recovery voltage is...

  • Two-dimensional kinetic model of a short high-current vacuum arc discharge. Londer, Ya.; Ulyanov, K. // High Temperature;Jun2011, Vol. 49 Issue 3, p315 

    two-dimensional kinetic model of a short high-current vacuum arc discharge has been developed in which magnetized electrons move in the hydrodynamic regime and fast cathode ions move in the free-flight regime in a two-dimensional electric field. The model includes the distribution of ions over...

  • Time dependent plasma properties during microarcing in radio frequency plasmas. Yin, Y.; Allan, S. Y.; Bilek, M. M. M.; McKenzie, D. R. // Applied Physics Letters;11/5/2007, Vol. 91 Issue 19, p191501 

    We report experimental results for time dependent plasma properties during microarcing in a rf plasma system. A cutoff discriminator bias voltage can be defined as a parameter representing plasma potential. The cutoff voltage during the microarcing does not exactly follow the dependence of...

  • Low-frequency transition radiation from a short laser pulse at the plasma boundary. Gorbunov, L.; Frolov, A. // Journal of Experimental & Theoretical Physics;Jun2006, Vol. 102 Issue 6, p894 

    The transition radiation that appears when a short laser pulse crosses the vacuum-plasma boundary and that is attributable to an vortex electric current produced at the plasma boundary by averaged ponderomotive forces has been considered for the first time. The spectral, angular, and...

  • Deuterium Liner and Multiparametric Studies of the Formation of an Inverse Z-Pinch. Bystritskii, Vit. M.; Bystritsky, Vyach. M.; Wozniak, J.; Grebenyuk, V. M.; Gula, E.; Dudkin, G. N.; Mesyats, G. A.; Nechaev, B. A.; Padalko, V. N.; Parzhitski, S. S.; Pen’kov, F. M.; Ratakhin, N. A.; Sorokin, S. A.; Stolupin, V. A. // Technical Physics;Sep2002, Vol. 47 Issue 9, p1098 

    A method and results of measurements are presented of the ion energy distribution in a deuterium liner accelerated in the inverse Z-pinch, in which the plasma is accelerated electrodynamically from the liner axis. Knowledge of the deuteron energy distribution is of primary importance for the...

  • Structure of Steady-State Debye Layers in a Low-Density Plasma near a Dielectric Surface. Morozov, A. I.; Savel’ev, V. V. // Plasma Physics Reports;Apr2004, Vol. 30 Issue 4, p299 

    Exact steady-state analytic solutions describing kinetic processes in a low-density plasma layer near a dielectric surface are found in a time-dependent one-dimensional model with allowance for secondary electron emission. It is shown that, at low electron temperatures, both the electric...

  • Nonlinear absorption of surface plasmons and emission of electrons from metallic targets. Singh, D. B.; Kumar, Gagan; Tripathi, V. K. // Physics of Plasmas;Oct2007, Vol. 14 Issue 10, p102108 

    A large-amplitude surface plasma wave (SPW) over a metal-vacuum interface Ohmically heats the electrons and undergoes nonlinear absorption. The attenuation rate increases with the local SPW amplitude. The enhanced electron temperature leads to stronger thermionic emission of electrons. At...

  • Kinetics of free radicals in the plasma of a spark discharge in methane. Kirikov, A. V.; Ryzhov, V. V.; Suslov, A. I. // Technical Physics Letters;Oct99, Vol. 25 Issue 10, p794 

    The kinetics of reactions in the plasma of a spark discharge in methane at atmospheric pressure is analyzed using numerical simulation, taking account of the gas-dynamic expansion of the channel. The processes leading to the formation and annihilation of CH[sub x] radicals are investigated and...

  • Characterization of a microsecond-conduction-time plasma opening switch. Commisso, R. J.; Goodrich, P. J.; Grossmann, J. M.; Hinshelwood, D. D.; Ottinger, P. F.; Weber, B. V. // Physics of Fluids B: Plasma Physics;Jul92, Vol. 4 Issue 7, p2368 

    This paper presents data and analyses from which emerges a physical picture of microsecondconduction-time plasma opening switch operation. During conduction, a broad current channel penetrates axially through the plasma, moving it toward the load. Opening occurs when the current channel reaches...


Read the Article


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

Try another library?
Sign out of this library

Other Topics