3D electromagnetic simulation of spatial autoresonance acceleration of electron beams

3rd International Meeting for Researchers in Materials and Plasma Technology; 1st Symposium on Nanoscience and Nanotechnology

物理学;材料科学

Dugar-Zhabon, V.D.^1 ; González, J.D.^2 ; Orozco, E.A.^1

Universidad Industrial de Santander, Bucaramanga, Colombia^1

Universidad Del Magdalena, Santa Marta, Colombia^2

关键词: Acceleration mechanisms;    Centered finite differences;    Charge conservation;    Electrostatic approximation;    Magnetostatic field;    Newton-Lorentz equation;    Particle in cell codes;    Trilinear interpolation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/687/1/012077/pdf
DOI  :  10.1088/1742-6596/687/1/012077

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The results of full electromagnetic simulations of the electron beam acceleration by a TE112linear polarized electromagnetic field through Space Autoresonance Acceleration mechanism are presented. In the simulations, both the self-sustaned electric field and selfsustained magnetic field produced by the beam electrons are included into the elaborated 3D Particle in Cell code. In this system, the space profile of the magnetostatic field maintains the electron beams in the acceleration regime along their trajectories. The beam current density evolution is calculated applying the charge conservation method. The full magnetic field in the superparticle positions is found by employing the trilinear interpolation of the mesh node data. The relativistic Newton-Lorentz equation presented in the centered finite difference form is solved using the Boris algorithm that provides visualization of the beam electrons pathway and energy evolution. A comparison between the data obtained from the full electromagnetic simulations and the results derived from the motion equation depicted in an electrostatic approximation is carried out. It is found that the self-sustained magnetic field is a factor which improves the resonance phase conditions and reduces the beam energy spread.