Electron acceleration under the action of a laser pulse onto ionizing plasma corona

31st International Conference on Equations of State for Matter

Pugachev, L.P.^1,2 ; Popov, V.S.^1,2 ; Andreev, N.E.^1,2

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13 Bldg 2, Moscow

125412, Russia^1

Moscow Institute of Physics and Technology, Institutskiy Pereulok 9, Dolgoprudny, Moscow Region

141700, Russia^2

关键词: Electron acceleration;    Gaussian envelope;    Inhomogeneities;    Ionizing plasma;    Modulational instability;    Particle injection;    Self modulation;    Wavebreaking;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012106/pdf
DOI  :  10.1088/1742-6596/774/1/012106

来源: IOP

【 摘 要 】

The performed simulations in contrast to the previous studies have shown that the generation of the wake wave in the self-modulational regime, its wavebreaking with subsequent particle injection and acceleration occur for the initially Gaussian envelope of the laser pulse if the processes of tunnelling ionization are taken into account. The self-modulation evolve faster in comparison to the case without ionization because of the abrupt density inhomogeneities which appear at the front edge of the laser pulse because of ionization. These inhomogeneities lead to the three wave character of the resonance modulational instability. The ionization blueshifting of the laser light is observed in the simulations.