Suppression of multipactor discharge on a dielectric surface by an external magnetic field

Cai, Libing; Wang, Jianguo; Zhu, Xiangqin; Wang, Yue; Xuan, Chun; Xia, Hongfu
July 2011
Physics of Plasmas;Jul2011, Vol. 18 Issue 7, p073504
Academic Journal
The multipactor discharge on a dielectric surface in an external magnetic field is simulated by using the particle-in-cell method, and the electron number, energy, the velocity of the yield of secondary electrons, and the power deposited on dielectric surface in the process of multipactor discharge are investigated. The effects of the strength of the external magnetic field on multipactor are studied. The results show that when the external magnetic field reaches a certain value, the multipactor is weaker than that in the case of no external magnetic field and becomes much lighter versus the strength of the external magnetic field in the half microwave period in which the E×B drift pulls the electrons back to dielectric surface. And in the other half microwave period in which the E×B drift pushes the electrons away from the dielectric surface, the multipactor is cut off. So the power capability can be increased to the fourfold by the suppression of multipactor by applying an external magnetic field.


Related Articles

  • Net current generation and beam transport efficiency of grad-B-drift transported relativistic electron beams. Rose, D. V.; Welch, D. R.; Ottinger, P. F.; Schumer, J. W. // Physics of Plasmas;Nov2001, Vol. 8 Issue 11, p4972 

    Numerical simulations of grad-B drifting, high-current, relativistic electron beams are presented. The simulations use a hybrid fluid/particle-in-cell code to study the net-current and conductivity evolution for 200 to 900 kA, 1.3 MeV annular electron beams in a background gas of nitrogen (N[sub...

  • Investigation of the Electrical Conductivity of a Plasma in a Spherical Tokamak. Kostomarov, D. P.; Zaitsev, F. S.; Akers, R. J.; Shishkin, A. G. // Doklady Physics;Jun2004, Vol. 49 Issue 6, p350 

    Focuses on the study of the electrical conductivity of the plasma in discharges at the MAST set-up by the mathematical simulation method. Model of the evolution of a toroidal plasma; Problem of the controlled thermonuclear fusion; Penetration of an induced magnetic field into the plasma.

  • Striation pattern of target particle and heat fluxes in three dimensional simulations for DIII-D. Frerichs, H.; Schmitz, O.; Reiter, D.; Evans, T. E.; Feng, Y. // Physics of Plasmas;Feb2014, Vol. 21 Issue 2, p1 

    The application of resonant magnetic perturbations results in a non-axisymmetric striation pattern of magnetic field lines from the plasma interior which intersect the divertor targets. The impact on related particle and heat fluxes is investigated by three dimensional computer simulations for...

  • Preliminary design and optimization of a G-band extended interaction oscillator based on a pseudospark-sourced electron beam. Yin, Y.; He, W.; Zhang, L.; Yin, H.; Cross, A. W. // Physics of Plasmas;2015, Vol. 22 Issue 7, p1 

    The design and simulation of a G-band extended interaction oscillator (EIO) driven by a pseudospark-sourced electron beam is presented. The characteristic of the EIO and the pseudosparkbased electron beam were studied to enhance the performance of the newly proposed device. The beam-wave...

  • Formation mechanism of dot-line square superlattice pattern in dielectric barrier discharge. Weibo Liu; Lifang Dong; Yongjie Wang; Xinpu Zhang; Yuyang Pan // Physics of Plasmas;2014, Vol. 21 Issue 11, p1 

    We investigate the formation mechanism of the dot-line square superlattice pattern (DLSSP) in dielectric barrier discharge. The spatio-temporal structure studied by using the intensified-charge coupled device camera shows that the DLSSP is an interleaving of three different subpatterns in one...

  • Energisation of O+ and O+2 Ions at Mars: An Analysis of a 3-D Quasi-Neutral Hybrid Model Simulation. Kallio, E.; Fedorov, A.; Barabash, S.; Janhunen, P.; Koskinen, H.; Schmidt, W.; Lundin, R.; Gunell, H.; Holmström, M.; Futaana, Y.; Yamauchi, M.; Grigoriev, A.; Winningham, J.; Frahm, R.; Sharber, J. // Space Science Reviews;Jul2006, Vol. 126 Issue 1-4, p39 

    We have studied the loss of O+ and O+2 ions at Mars with a numerical model. In our quasi-neutral hybrid model ions (H+, He++, O+, O+2) are treated as particles while electrons form a massless charge-neutralising fluid. The employed model version does not include the Martian magnetic field...

  • One-dimensional particle simulation of the filamentation instability: Electrostatic field driven by the magnetic pressure gradient force. Dieckmann, M. E.; Kourakis, I.; Borghesi, M.; Rowlands, G. // Physics of Plasmas;Jul2009, Vol. 16 Issue 7, p074502 

    Two counterpropagating cool and equally dense electron beams are modeled with particle-in-cell simulations. The electron beam filamentation instability is examined in one spatial dimension, which is an approximation for a quasiplanar filament boundary. It is confirmed that the force on the...

  • Parallel transport of long mean-free-path plasmas along open magnetic field lines: Plasma profile variation. Guo, Zehua; Tang, Xian-Zhu // Physics of Plasmas;Aug2012, Vol. 19 Issue 8, p082310 

    Parallel transport of long mean-free-path plasma along an open magnetic field line is characterized by strong temperature anisotropy, which is driven by two effects. The first is magnetic moment conservation in a non-uniform magnetic field, which can transfer energy between parallel and...

  • Kinetic Simulations of Nonequilibrium Plasmas. Likhanskii, Alexandre // AIP Conference Proceedings;5/20/2011, Vol. 1333 Issue 1, p1093 

    The paper presents study of one of the examples of nonequilibrium plasmas-dielectric barrier discharge in atmospheric air-using kinetic particle-in-cell code VORPAL. It has been demonstrated that the use of state-of-the-art methods for solution of the electrostatic problems and the concept of...


Read the Article


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

Try another library?
Sign out of this library

Other Topics