The Brillouin flow in a smooth-bore magnetron fed by split cathode

Y. Bliokh; J. G. Leopold; Ya. E. Krasik

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arXiv · 2502.11865

The Brillouin flow in a smooth-bore magnetron fed by split cathode

Y. Bliokh·J. G. Leopold·Ya. E. Krasik

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Abstract

Explosive emission from an axial cathode of a relativistic magnetron produces plasma, the radial expansion of which can cause pulse shortening. In a split cathode fed magnetron, the electron source and its explosive plasma are outside the space where the high power microwave producing interaction occurs. This electron source is a longitudinal annular electron column expanding radially. This expansion simulates the radial emission from an axial cathode. A mathematical model and numerical simulations are presented which enable to calculate the parameters of this electron column, its density, angular velocity, and potential distributions. The Hull Cutoff and Buneman-Hartree modified conditions applicable to the split cathode magnetron are formulated.

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Y. Bliokh, J. G. Leopold, Ya. E. Krasik. 2025-02-17. The Brillouin flow in a smooth-bore magnetron fed by split cathode. https://arxiv.org/abs/2502.11865

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