A simple absorbing layer for EM‐radiation from a beam‐plasma interaction system. (21st September 2018)

• Record Type: Journal Article
• Authors: Berendeev, Evgeny; Dudnikova, Galina; Efimova, Anna; Vshivkov, Vitaly
• Other Names: Anguelov Roumen guestEditor.; Banasiak Jacek guestEditor.; Debbouche Amar guestEditor.
• Is Part Of: Mathematical methods in the applied sciences. Volume 41:Number 18(2018)
• Page Start: 9276
• Page End: 9282
• Publication Date: 2018-09-21
• Subjects: absorption conditions -- electromagnetic radiation -- Maxwell equations -- PIC‐method -- plasma physics; Mathematics -- Periodicals; Technology -- Mathematics -- Periodicals; 519
• DOI: 10.1002/mma.5253
• Languages: English
• ISSNs: 0170-4214

Abstract

Abstract : In this paper, a problem of taking into account the electromagnetic radiation power in a numerical simulation of electron beam‐plasma interaction is considered. The numerical model is based on the particle‐in‐cell (PIC) method and the finite‐difference time‐domain (FDTD) scheme for solving Maxwell equations. As a boundary condition, it is proposed to use a simple layer of absorption, that is, artificial attenuation of an electromagnetic wave by multiplying the electromagnetic field in the boundary domain by a coefficient k < 1 depending on the distance to the boundary. The numerical experiments performed show that using such a layer for absorbing the electromagnetic radiation and for taking into account its power is efficient.