7 May 2013 Observations of longitudinal and transverse self-injections in laser-plasma wakefield accelerators
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Abstract
One of the key ingredients of laser-plasma accelerators is their injector, which defines how electrons are trapped into the laser-driven plasma wave. The stability and control of laser-plasma electron bunches strongly depends on this injection stage. Self-injection is a convenient way to achieve the electron trapping and is the most widely used injector. Here we demonstrate, by using a variable length gas cell, that injection can be achieved by either longitudinal or transverse self-injection, giving rise to very different electron beam features. The results are supported by 3 dimensional particle-in-cell simulations.
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C. Thaury, S. Corde, A. Lifschitz, G. Lambert, K. Ta Phuoc, X. Davoine, R. Lehe, D. Douillet, A. Rousse, V. Malka, "Observations of longitudinal and transverse self-injections in laser-plasma wakefield accelerators", Proc. SPIE 8779, Laser Acceleration of Electrons, Protons, and Ions II; and Medical Applications of Laser-Generated Beams of Particles II; and Harnessing Relativistic Plasma Waves III, 877907 (7 May 2013); doi: 10.1117/12.2017422; https://doi.org/10.1117/12.2017422
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