Influence of the longitudinal magnetic field in the accelerating gap on the limiting parameters of a plasma electron source operating in the forevacuum pressure range

Zhirkov, I.; Burdovitsin, V.; Oks, E.
September 2007
Technical Physics;Sep2007, Vol. 52 Issue 9, p1217
Academic Journal
Results are presented from experimental studies of the influence of the longitudinal magnetic field in the accelerating gap on the emission current, accelerating voltage, and maximum gas pressure in a plasma electron source generating a continuous electron beam in the forevacuum pressure range. It is shown that the magnetic field in the beam-formation region stabilizes the emitting boundary of the plasma in the accelerating gap, thereby considerably improving the source parameters.


Related Articles

  • Resonant electron firehose instability: Particle-in-cell simulations. Gary, S. Peter; Nishimura, Kazumi // Physics of Plasmas;Sep2003, Vol. 10 Issue 9, p3571 

    Consider a collisionless, homogeneous plasma in which the electron velocity distribution is a bi-Maxwellian with T⊥

  • Nonlinear magnetohydrodynamics of pulsed parallel current drive in reversed-field pinches. Reynolds, J. M.; Sovinec, C. R.; Prager, S. C. // Physics of Plasmas;Jun2008, Vol. 15 Issue 6, p062512 

    Nonlinear simulation with a simple resistive magnetohydrodynamics model is used to investigate the stabilization of magnetic fluctuations in reversed-field pinch plasmas subject to pulsed-parallel current drive. Numerical results are diagnosed with computations of nonlinear power transfer and by...

  • Radio-frequency plasma functionalization of carbon nanotubes surface O2, NH3, and CF4 treatments. Felten, A.; Bittencourt, C.; Pireaux, J. J.; Van Lier, G.; Charlier, J. C. // Journal of Applied Physics;10/1/2005, Vol. 98 Issue 7, p074308 

    Inductive coupled rf-plasma at 13.56 MHz was used to modify multiwalled carbon nanotubes (MWCNTs). This technique can be easily used to tailor the chemical composition of carbon nanotubes by attaching a wide variety of functional groups at their surface: oxygen-, nitrogen-, and...

  • Role of Plasma Electron Vortex Formation at Laser Interaction with Foil for Ion Acceleration. Maslov, V. I.; Egorov, A. M.; Onishchenko, I. N. // AIP Conference Proceedings;6/14/2010, Vol. 1242 Issue 1, p336 

    The distribution of electrical potential and electron density near foil, resulting to vortical electron dynamics at interaction of an intensive laser pulse with a foil, is considered.

  • On the solutions of three-dimensional non-null magnetic reconnection. Al-Salti, Nasser; Hornig, Gunnar // Physics of Plasmas;Aug2009, Vol. 16 Issue 8, p082101 

    Here we present solutions of a stationary magnetohydrodynamic (MHD) model for three-dimensional (3D) magnetic reconnection in the absence of a null point. The solutions are found in the form of an expansion scheme with a localized nonideal region. A wide variety of both analytical and numerical...

  • The effects of gas mixing and plasma electrode position on the emittance of an electron cyclotron resonance ion source. Suominen, P.; Tarvainen, O.; Koivisto, H. // Review of Scientific Instruments;May2004, Vol. 75 Issue 5, p1517 

    Gas mixing is a commonly used method to improve the intensities and the charge state distribution of ion beams extracted from an electron cyclotron resonance ion source (ECRIS). At the same time, the emittance of the ion beam should be as small as possible. In this work we have studied the...

  • Current sheet formation and nonideal behavior at three-dimensional magnetic null points. Pontin, D. I.; Bhattacharjee, A.; Galsgaard, K. // Physics of Plasmas;May2007, Vol. 14 Issue 5, p052106 

    The nature of the evolution of the magnetic field, and of current sheet formation, at three-dimensional (3D) magnetic null points is investigated. A kinematic example is presented that demonstrates that for certain evolutions of a 3D null (specifically those for which the ratios of the null...

  • Ballooning mode stability in the Hall-magnetohydrodynamics model. Torasso, R.; Hameiri, Eliezer // Physics of Plasmas;Mar2005, Vol. 12 Issue 3, p032106 

    The governing equations of the ballooning modes are derived within the Hall-magneto-hydrodynamics (HMHD) model and given a standard Hamiltonian form, which is then used to derive sufficient conditions for stability. In most cases, ideal magnetohydrodynamics (MHD) stability implies HMHD...

  • Plasma dynamics in pulsed strong magnetic fields. Doron, R.; Arad, R.; Tsigutkin, K.; Osin, D.; Weingarten, A.; Starobinets, A.; Bernshtam, V. A.; Stambuichik, E.; Raichenko, Yu. V.; Maront, Y.; Fruchtman, A.; Fisher, A.; Huba, J. D.; Roth, M. // Physics of Plasmas;May2004, Vol. 11 Issue 5, p2411 

    Recent investigations of the interaction of fast-rising magnetic fields with multi-species plasmas at densities of 1013-1015 cm³ are described. The configurations studied are planar or coaxial interelectrode gaps pre-tilled with plasmas, known as plasma opening switches. The diagnostics are...


Read the Article


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

Try another library?
Sign out of this library

Other Topics