Limitation of the plasma channel due to the frequency blueshift

8th International Conference on Inertial Fusion Sciences and Applications

Kotaki, Hideyuki^1 ; Hayashi, Yukio^1 ; Mori, Michiaki^1 ; Kando, Masaki^1 ; Koga, James K.^1 ; Bulanov, Sergei V.^1,2

Japan Atomic Energy Agency, Kizugawa, Kyoto

619-0215, Japan^1

A. M. Prokhorov Institute of General Physics RAS, Moscow, Russia^2

关键词: Beam generation;    Blue shift;    Critical power;    Laser-plasma interactions;    Physical mechanism;    Plasma channel;    Relativistic self focusing;    Self-focusing;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/688/1/012054/pdf
DOI  :  10.1088/1742-6596/688/1/012054

来源: IOP

【 摘 要 】

In laser-plasma interaction, there are physical mechanisms, such as quantum beam generation, relativistic self-focusing of laser pulses, frequency blueshift of laser pulses, etc. Long plasma channel formation via self-focusing is an important mechanism for generating a stable electron beam. The frequency blueshift changes the critical power of the self-focusing. The plasma channel is limited by the change of the power. The limit of the channel causes a fixed blueshift of the laser pulse.