Enhanced x-rays from resonant betatron oscillations in laser wakefield with external wigglers. (31st August 2016)

• Record Type: Journal Article
• Authors: Zhang, Z M; Zhang, B; Hong, W; Yu, M Y; Deng, Z G; Teng, J; He, S K; Gu, Y Q
• Is Part Of: Plasma physics and controlled fusion. Volume 58:Number 10(2016:Oct.)
• Publication Date: 2016-08-31
• Subjects: laser driven wakefield -- betatron x-rays -- external wiggler -- particle-in-cell simulations; Plasma (Ionized gases) -- Periodicals; Controlled fusion -- Periodicals; 530.44
• DOI: 10.1088/0741-3335/58/10/105009
• Languages: English
• ISSNs: 0741-3335

Abstract

Abstract: Generation of ultra-short betatron x-rays by laser-accelerated electron beams is of great research interest as it has many applications. In this paper, we propose a scheme for obtaining bright betatron x-rays by applying external wiggler magnetic field in the laser wakefield to resonantly drive the betatron oscillations of the accelerated electrons therein. This results in a significant enhancement of the betatron oscillation amplitude and generation of bright x-rays with high photon energy. The scheme is demonstrated using two-dimensional particle-in-cell simulation and discussed using a simple analytical model.