TITLE

Switching of low density diode plasmas

AUTHOR(S)
Waisman, E. M.; Steen, P. G.; Parks, D. E.; Wilson, A.
PUB. DATE
June 1985
SOURCE
Applied Physics Letters;6/1/1985, Vol. 46 Issue 11, p1045
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The switching action of low density injected carbon plasmas is investigated by a numerical collisionless two-dimensional electromagnetic particle simulation. The plasma switch is considered in a planar vacuum transmission line with input current per unit length ramped at 240 A/cm ns during 10 ns, and short circuit output. The calculations, done with C+ ions at 4×1012/cm3, exhibit switching of the current from the plasma switch to the short circuit load. At early times (1–2 ns) a sheath of positive charge forms at the cathode by depletion of the plasma electrons. The electric fields at the cathode are large enough to explain the formation of a denser cathode plasma. The mechanism of switching appears to be, for this density and load conditions, the magnetic limiting of drifting electrons. The ion motion seen plays an insignificant role in this particular case.
ACCESSION #
9817652

 

Related Articles

  • Relativistic particle acceleration by obliquely propagating electromagnetic fields. Villal�n, Elena; Burke, William J. // Physics of Fluids (00319171);Dec87, Vol. 30 Issue 12, p3695 

    The relativistic equations of motion are analyzed for charged particles in a magnetized plasma and externally imposed electromagnetic fields (?, k), which have wave vectors k that are at arbitrary angles. The particle energy is obtained from a set of nonlinear differential equations, as a...

  • Numerical simulation of a low-density plasma erosion opening switch. Grossmann, J. M.; Ottinger, P. F.; Neri, J. M.; Drobot, A. T. // Physics of Fluids (00319171);Aug86, Vol. 29 Issue 8, p2724 

    Current conduction through a low density (∼1012 cm-3) collisionless plasma injected between two coaxial conducting cylinders is simulated using a 2 (1)/(2) -D, electromagnetic particle-in-cell code. Plasma is injected through the anode towards the cathode with flow velocity, VF, and is...

  • Nonlinear Alfv�n waves and the plasma vortices. Jovanovic, D. // Physics of Fluids (00319171);Feb87, Vol. 30 Issue 2, p417 

    A set of three coupled nonlinear differential equations describing low-frequency (?/?t

  • On self-induced transparency in laser—plasma interactions. Goloviznin, V. V.; Schep, T. J. // JETP Letters;10/10/99, Vol. 70 Issue 7, p450 

    We study fully relativistic nonlinear one-dimensional equations describing steady-state solutions for an electromagnetic wave interacting with a plasma in the self-induced transparency regime. In addition to the well-known solution that corresponds to the transmission of the electromagnetic wave...

  • Dynamic and Debye shielding and anti-shielding. Hansen, C.; Reimann, A. B. // Physics of Plasmas;May96, Vol. 3 Issue 5, p1820 

    Studies dynamic and Debye shielding and anti-shielding in collisionless plasmas. Distribution functions in dynamic shielding; Anti-shielding of a positive test charge by a one-dimensional immobile-ion plasma; Collisionless shielding in one, two and three dimensions; Agreement of the...

  • Electromagnetic wave scattering from magnetic fluctuations in tokamaks. Vahala, Linda; Vahala, George; Bretz, N. // Physics of Fluids B: Plasma Physics;Mar92, Vol. 4 Issue 3, p619 

    Cross sections are calculated for electromagnetic wave scattering and mode transformation from magnetic and density fluctuations in a homogeneous plasma. For the special case of scattering perpendicular to the magnetic field, density fluctuations scatter ordinary to ordinary and extraordinary to...

  • Stimulated Brillouin scattering of electromagnetic waves in a dusty plasma. Salimullah, M.; Sen, A. // Physics of Fluids B: Plasma Physics;Jun92, Vol. 4 Issue 6, p1441 

    The stimulated scattering of electromagnetic waves off low-frequency modes in a homogeneous, unmagnetized, and collisionless dusty plasma has been investigated theoretically. The presence of the dust particles introduces a background inhomogeneous electric field that significantly influences the...

  • One-dimensional Vlasov–Maxwell equilibria. Greene, John M. // Physics of Fluids B: Plasma Physics;Jun93, Vol. 5 Issue 6, p1715 

    The purpose of this paper is to show that the Vlasov equilibrium of a plasma of charged particles in an electromagnetic field is closely related to a fluid equilibrium, where only a few moments of the velocity distribution of the plasma are considered. In this fluid equilibrium the electric...

  • Nonlinear wave–particle scattering and absorption of electromagnetic and electrostatic waves in a magnetized plasma. Sugaya, R. // Physics of Fluids B: Plasma Physics;Oct93, Vol. 5 Issue 10, p3524 

    Nonlinear wave–particle scattering and absorption (nonlinear Landau and cyclotron damping) of electromagnetic and electrostatic waves by high energy or relativistic electrons in a homogeneous magnetized plasma are investigated theoretically by numerical analysis of general and simplified...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics