Прискорення заряджених частинок кiльватерними полями в плазмово-дiелектричних структурах

Abstract

Roman R. Kniaziev Accelerating of charged particles by wakefields in the plasma-dielectric structures. The manuscript Thesis for scientific degree candidate of science in physics and mathematics by theme 01.04.08 – plasma physics. – Kharkiv V. N. Karazin National University Ministry of Education and Science of Ukraine, Kharkiv, 2017. Dissertation work is devoted to accelerating bunches of charged particles in plasma-dielectric structures. The main purpose of the study is to construct a theoretical framework for the use of new methods of acceleration. The scheme for obtaining and analytical expressions describing wakefields that are excited in the plasma-dielectric waveguide bunch of charged particles. Considered the theory of linear excitation wakefields. It is shown that quasi-static field of the bunch does not affect the bunch’s radial dynamic at energies since MeV range. Considered situation wakefield excitation sequence of electron bunches. The effect on the plasma density amplitude of wakefield in the dielectric structure. Considered dependent spectra of wakefield in the plasma-dielectric structures by plasma density. A numerical simulation of wake fields excitation in the plasma-dielectric waveguide for linear and nonlinear modes for much excitement wakefields in the plasma-dielectric structures. A mathematical model describing the dynamics of radial bunch of charged particles in plasma-dielectric structure. A numerical simulation of accelerated bunch dynamics in plasma-dielectric structures. Included impact emittans of initial bunch and proposed a new scheme bunches of charged particles transportation in the dielectric wakefield accelerator using an array of plasma cells.