Abstract
We report the results of numerical particle-in-cell (PIC) simulation of the electron bunch generation by a laser pulse upon interaction with a rarefied gas target. It is shown that the mechanism of electron self-injection during the breaking of the wake wave of a laser pulse propagating along an ascending slope of the plasma target density makes it possible to produce subfemtosecond electron bunches with a charge of hundreds of picocoulombs and an electron energy of hundreds of megaelectronvolts. The considered mechanism of the formation of short bunches is the basis for the development of the injector.
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The work was partially supported by the Russian Foundation for Basic Research and Rosatom State Corporation within the framework of scientific project no. 20-21-00150.
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Translated by I. Ulitkin
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Kuznetsov, S.V., Umarov, I.R. & Andreev, N.E. Laser-Plasma Injector of an Ultrashort Electron Bunch. Bull. Lebedev Phys. Inst. 50 (Suppl 7), S741–S748 (2023). https://doi.org/10.3103/S1068335623190119
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DOI: https://doi.org/10.3103/S1068335623190119