S. V. Kuznetsov, I. R. Umarov, N. E. Andreev
- Federal Research Center The Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod
- Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow
- Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region
Abstract: We report the results of numerical particle-in-cell (PIC) simulation of the generation of an electron bunch by a laser pulse upon interaction with a rarefied gas target. It is shown that the use of the electron self-injection mechanism during the breaking of a wake wave of a laser pulse propagating along an ascending slope of the plasma target density makes it possible to obtain subfemtosecond electron bunches with a charge of hundreds of pC and an electron energy of hundreds of MeV. The considered mechanism of the formation of short bunches is the basis for the development of the injector.
Keywords: laser pulse, electron bunch, accelerating wake field, generation, injection.
Received: 30.11.2022
Accepted: 30.11.2022