Plasma and Fusion Research

Volume 10, 1304005 (2015)

Letters

Collimation of Fast Electrons in Critical Density Plasma Channel

Tomoyuki IWAWAKI, Hideaki HABARA, Sophie BATON¹⁾, Kiyoshi MORITA, Julien FUCHS¹⁾, Sophia CHEN¹⁾, Motoaki NAKATSUTSUMI^1,2), Christophe ROUSSEAUX³⁾, Francesco FILIPPI⁴⁾, Wigen NAZAROV⁵⁾ and Kazuo A. TANAKA

: Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
1): LULI, CNRS -Ecole Polytechnique -Université Pierre et Marie Curie -CEA, 91128 Palaiseau, France
2): European X-Ray Free-Electron Laser Facility (XFEL) GmbH, Germany
3): CEA, DAM, DIF, F-91297 Arpajon, France
4): La SAPIENZA, University of Rome, Dip. SBAI, 00161 Rome, Italy
5): School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9ST, Scotland, UK

(Received 4 October 2014 / Accepted 17 December 2014 / Published 30 January 2015)

Abstract

Significantly collimated fast electron beam with a divergence angle 10° (FWHM) is generated through the interaction of ultra-intense laser light with a uniform critical density plasma in experiments and 2D PIC simulations. In the experiment, the uniform critical density plasma is created by ionizing an ultra-low density foam target. The spacial distribution of the fast electron is observed by Imaging Plate. 2D PIC simulation and post process analysis reveal magnetic collimation of energetic electrons along the plasma channel.

Keywords

ultra-intense laser, fast electron, plasma channeling, electron beam

DOI: 10.1585/pfr.10.1304005

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This paper may be cited as follows:

Tomoyuki IWAWAKI, Hideaki HABARA, Sophie BATON, Kiyoshi MORITA, Julien FUCHS, Sophia CHEN, Motoaki NAKATSUTSUMI, Christophe ROUSSEAUX, Francesco FILIPPI, Wigen NAZAROV and Kazuo A. TANAKA, Plasma Fusion Res. 10, 1304005 (2015).