DATA TRANSFORMATION CYLINDRICAL MAGNETIC FIELD MAGNETRON GUN AND THE PROBLEM OF RADIAL MOTION OF ELECTRONS
DOI:
https://doi.org/10.32782/2618-0340/2020.1-3.11Keywords:
magnetron gun, secondary emission cathode, electron beam, mathematical modeling, histogram, magnetic field distributionAbstract
The results of the study on the formation of a radial electron beam by a magnetron gun with a secondary emission cathode are presented. The aim of the work was to create the mathematical model of the formation of a radial electron beam with energy of tens of keV in the incident magnetic field of the solenoid, to study the dependence of the characteristics of the beam current on the amplitude and distribution of the magnetic field along the axis of the system, to study the possibility of irradiation of the surface of the tubular products. In the work on the basis of the Hamiltonian formalism of electron motion in a magnetic field, a software tool has been synthesized that allows to perform numerical simulations of the dynamics of tubular electron flows in a falling magnetic field of a solenoid. Based on the least-squares method, an algorithm for converting an array of magnetic field values along an axis of particle transport into an analytic differentiable function is constructed and implemented. The synthesized function and its derivative are used to model the motion of electrons in the magnetic field of a magnetron gun. The results of numerical modeling of the motion of a tubular electron flow are presented. The formation of its distribution during transport in the falling magnetic field of the solenoid is studied. Experimental data on electron beam irradiation of metal targets in the gun chamber are also given. The simulation results are in good agreement with the experimental data.
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