Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11889/7777
Title: Electron scattering and acceleration by a tightly focused laser beam
Authors: Salamin, Yousef I. 
Mocken, Guido R. 
Keitel, Christoph H. 
Keywords: Electrons - Scattering;Electron accelerators;Supersonic nozzles;Electron beams;Laser plasmas;Laser beams;High power lasers
Issue Date: 2002
Publisher: Physical Review Special Topics - Accelerators and Beams
Abstract: By numerically solving the relativistic equations of motion of a single electron in laser fields modeled by those of a Gaussian beam, we demonstrate electron capture by, reflection from, and transmission through the beam. In modeling the fields, terms of order up to 5, where is the diffraction angle, are retained. All cases of capture are accompanied by energy gain that may reach a few GeV, from fields of present-day intensities. Reflection and transmission, on the other hand, result sometimes in no gain or even in a loss of energy. It is shown that a laboratory static magnetic field may be used to eject a captured electron, a process that sometimes results in even more energy gain. For example, a 2.5 T uniform magnetic field suffices to eject a 3.633 MeV electron injected at 6 to the axis of a linearly polarized beam of a 10 PW power output and aimed at a point near the focus. Such an electron gains 1128 MeV from the laser field alone. However, it emerges with a 1230 MeV net energy gain under the additional action of the small magnetic field.
URI: http://hdl.handle.net/20.500.11889/7777
DOI: 10.1103/PhysRevSTAB.5.101301
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