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Coherent radiation of an electron bunch colliding with an intense laser pulseстатья
- Авторы: Gelfer E.G., Fedotov A.M., Klimo O., Weber S.
- Журнал: Physical Review Research
- Том: 6
- Номер: 3
- Год издания: 2024
- Номер статьи: L032013
- DOI: 10.1103/PhysRevResearch.6.L032013
- Аннотация: We study the conditions for coherent radiation of an electron bunch driven by a counterpropagating strong pulsed electromagnetic plane wave. We derive the spectrum of the coherent radiation and show that it is emitted backward with respect to the laser propagation direction and has a very narrow angular spread. We demonstrate that for a solid density plasma coherent radiation extends to frequencies up to hundreds of keV, thereby enhancing the low-frequency part of the spectrum by many orders of magnitude. Our analytical findings are tested with three-dimensional particle-in-cell simulations of an electron bunch passing through a laser pulse, clearly demonstrating how the coherence can essentially modify the observed radiation spectrum.
- Добавил в систему: Федотов Александр Михайлович