Electrons are accelerated in the laser wakefield (LWFA). This mechanism has been studied by 2D or 3D Particle In Cell simulation. However, how the electrons are injected in the wakefield is not understood. In this paper, we consider about the process of self -injection and propose new scheme. When plasma electron density modulates, parametric resonance of electron momentum is induced. The parametric resonance depends on laser waist modulation. We carried out 2D PIC simulation with the initial condition decided from resonance condition. Moreover, we analyze experimental result that generated 200-250 MeV monoenergetic electron beam with 400TW intense laser in CAEP in China.
|Journal||Journal of Physics: Conference Series|
|Issue number||Part 4|
|Publication status||Published - 2008 Jun 12|
|Event||5th International Conference on Inertial Fusion Sciences and Applications, IFSA 2007 - Kobe, Japan|
Duration: 2007 Sep 9 → 2007 Sep 14
ASJC Scopus subject areas
- Physics and Astronomy(all)