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The reflection of relativistic electron beam by virtual cathode

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Czechoslovak Journal of Physics Aims and scope

Abstract

We studied the formation of Virtual Cathode (VC) by a Relativistic Electron Beam (REB) propagating through a terminating foil into a vacuum region in experimental devices REBEX. The beam properties (homogeneity and angular spread of particle velocities) and arising electromagnetic fields (e.g. equipotentials of VC, internal azimuthal magnetic field) were determined numerically with the help of 2d relativistic electromagnetic currentline code ‘POISSON 2’. We were interested in obtaining the dependence of the reflection coefficient of the scattered REB by the created VC on the total beam current, beam energy, external magnetic field and on the length of vacuum drift tube. The results obtained are useful for an additional plasma heating mechanism via a two stream instability generated by the oscillating REB.

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Authors and Affiliations

  1. Institute of Plasma Physics, Czech. Acad. Sci., Za Slovankou 3, 180 69, Praha 8, Czech Republic

    P. Vrba

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  1. P. Vrba
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Vrba, P. The reflection of relativistic electron beam by virtual cathode. Czech J Phys 45, 215–227 (1995). https://doi.org/10.1007/BF01700263

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  • DOI: https://doi.org/10.1007/BF01700263

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