Effect of a magnetic field on ionizing electric discharge in air

Erofeev, A. V.; Zhukov, B. G.; Lapushkina, T. A.; Ponyaev, S. A.; Bobashev, S. V.
February 2009
Technical Physics Letters;Feb2009, Vol. 35 Issue 2, p137
Academic Journal
We have studied the effect of an external magnetic field on the form and structure of high-voltage gas discharge used for the ionization of airflow to the degree (∼10−5) necessary for the creation of a magnetohydrodynamic (MHD) control system. The experimental setup based on a shock tube comprised a magnetic field generation system, a 2–4 μs-pulsed, high-voltage, ionizing discharge system and an expanding MHD channel with a set of electrodes oriented along and across the magnetic field. In the first series of experiments, the discharge current was closed along the magnetic field lines; in the second series, the current was closed in the transverse direction. The patterns of discharge glow at various values of the magnetic induction were monitored. It is established that the most effective configuration employs periodic pulsed ionizing discharge in the transverse direction and a system of electrodes closing the magnetic-field-induced current.


Related Articles

  • Simulation of a DC Discharge in a Transverse Supersonic Gas Flow. Dvinin, S. A.; Ershov, A. P.; Timofeev, I. B.; Chernikov, V. A.; Shibkov, V. M. // High Temperature;Mar/Apr2004, Vol. 42 Issue 2, p171 

    This study is devoted to the investigation of a dc discharge in a transverse gas flow. It is shown that the discharge may exist in several forms depending on the gas flow velocity. The standard stationary discharge similar to a discharge in still gas is realized if the displacement rate of the...

  • Cold-Hollow-Cathode Arc Discharge in Crossed Electric and Magnetic Fields. Schanin, P. M.; Koval, N. N.; Akhmadeev, Yu. Kh.; Grigoriev, S. V. // Technical Physics;May2004, Vol. 49 Issue 5, p545 

    A crossed-field cold-hollow-cathode arc is stable at low working gas pressures of 10–2–10–1 Pa, magnetic-field- and gas-dependent arcing voltages of 20–50 V, and discharge currents of 20–200 A. This is because electrons come from a cathode spot produced on the...

  • Mechanisms of the α and γ modes in radio-frequency atmospheric glow discharges. Shi, J. J.; Kong, M. G. // Journal of Applied Physics;1/15/2005, Vol. 97 Issue 2, p023306 

    Large-volume and uniform atmospheric glow discharges are finding a vast range of processing applications, many of which have been traditionally addressed with the vacuum plasma technology. When excited at kilohertz or above, these atmospheric plasmas operate typically at low current densities...

  • Calculations of the current-voltage characteristic of a high-pressure space discharge with external gas ionization. Kozhevnikov, V.; Kozyrev, A. // Russian Physics Journal;Aug2007, Vol. 50 Issue 8, p783 

    A one-dimensional theoretical model of high-pressure gas discharge with an external ionizer is constructed in the present work. The model can be used to calculate the continuous current-voltage characteristic of the discharge with an external ionizer for any arbitrary current density from values...

  • Experimental Investigation of Ionization Waves in Fast Pulsed Capillary Discharges. Favre, M.; Leñero, A. M.; Suzuki, F.; Chuaqui, H.; Mitchell, I.; Wyndham, E. // AIP Conference Proceedings;2006, Vol. 875 Issue 1, p419 

    Previous investigations show that the electric breakdown process in shielded capillary discharges with a hollow cathode geometry is characterized by the propagation of an anode directed high speed ionization wave (HSIW). To further investigate HSIW assisted capillary discharges with negative...

  • Role of plasma electrons in the generation of a gas discharge plasma. Gruzdev, V.; Zalesski, V.; Rusetski, I. // Plasma Physics Reports;Dec2012, Vol. 38 Issue 13, p1056 

    The role of different ionization mechanisms in penning-type gas discharges used to generate an emitting plasma in plasma electron sources is considered. It is shown that, under certain conditions, a substantial contribution to the process of gas ionization is provided by plasma electrons.

  • Stepwise ionization in a glow discharge cathode layer in argon. Smirnov, B.; Tereshonok, D. // High Temperature;Nov2014, Vol. 52 Issue 6, p781 

    A contradiction between the classical theory of the glow-discharge cathode layer applied for an argon plasma and the cathode-drop potentials measured for different cathode materials is shown. This contradiction can be eliminated on the assumption that the ionization equilibrium in the cathode...

  • Glow-discharge-driven bucket ion source. Gavrilov, N. V.; Kamenetskikh, A. S. // Review of Scientific Instruments;May2004, Vol. 75 Issue 5, p1875 

    A two-stage source of broad beams of gaseous ions employing a glow-discharge plasma cathode and an anode chamber with a peripheral multicusp magnetic field has been studied. A grid, whose potential approached the potential of the screen grid of the ion source, separated the cathode and anode...

  • Simulation of Hysteresis in Glow Discharge. Mizuno, N.; Tomioka, U.; Hayashi, T.; Kawabe, T. // AIP Conference Proceedings;2003, Vol. 669 Issue 1, p453 

    The hysteresis of the glow discharge in VI space has been investigated by the numerical simulation. The simulation code has been formed by combination of the equation of the discharge current and the equation of the circuit. We have shown that the hysteresis is produced by the instability of the...


Read the Article


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

Try another library?
Sign out of this library

Other Topics