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Shock assisted ionization injection in laser-plasma accelerators

Abstract : Ionization injection is a simple and efficient method to trap an electron beam in a laser plasma accelerator. Yet, because of a long injection length, this injection technique leads generally to the production of large energy spread electron beams. Here, we propose to use a shock front transition to localize the injection. Experimental results show that the energy spread can be reduced down to 10 MeV and that the beam energy can be tuned by varying the position of the shock. This simple technique leads to very stable and reliable injection even for modest laser energy. It should therefore become a unique tool for the development of laser-plasma accelerators.
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https://hal.archives-ouvertes.fr/hal-01234027
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Submitted on : Thursday, November 26, 2015 - 10:07:31 AM
Last modification on : Friday, December 3, 2021 - 11:34:03 AM

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Cédric Thaury, E Guillaume, Agustin Lifschitz, Kim Ta Phuoc, M Hansson, et al.. Shock assisted ionization injection in laser-plasma accelerators. Scientific Reports, Nature Publishing Group, 2015, 5, pp.16310. ⟨10.1038/srep16310⟩. ⟨hal-01234027⟩

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