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Electron acceleration and emission in a field of a plane and converging dipole wave of relativistic amplitudes with the radiation reaction force taken into account
Umeå University, Faculty of Science and Technology, Department of Physics.
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2013 (English)In: Quantum electronics (Woodbury, N.Y.), ISSN 1063-7818, Vol. 43, no 4, 291-299 p.Article in journal (Refereed) Published
Abstract [en]

A comparative analysis is performed of the electron emission characteristics as the electrons move in laser fields with ultra-relativistic intensity and different configurations corresponding to a plane or tightly focused wave. For a plane travelling wave, analytical expressions are derived for the emission characteristics, and it is shown that the angular distribution of the radiation intensity changes qualitatively even when the wave intensity is much less than that in the case of the radiation-dominated regime. An important conclusion is drawn that the electrons in a travelling wave tend to synchronised motion under the radiation reaction force. The characteristic features of the motion of electrons are found in a converging dipole wave, associated with the curvature of the phase front and nonuniformity of the field distribution. The values of the maximum achievable longitudinal momenta of electrons accelerated to the centre, as well as their distribution function are determined. The existence of quasi-periodic trajectories near the focal region of the dipole wave is shown, and the characteristics of the emission of both accelerated and oscillating electrons are analysed.

Place, publisher, year, edition, pages
2013. Vol. 43, no 4, 291-299 p.
Keyword [en]
ultra-high-power laser radiation, radiation reaction force, dynamics and emission of an electron, dipole wave
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:umu:diva-72713DOI: 10.1070/QE2013v043n04ABEH015101ISI: 000318347400001OAI: diva2:626908
Available from: 2013-06-10 Created: 2013-06-10 Last updated: 2013-06-10Bibliographically approved

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Marklund, Mattias
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