Open AccessThe influence of plasma density decreasement by pre-pulse on the laser wakefield acceleration
Author(s) -
Keyan Dong,
Wu Yuchi,
Bin Zhu,
Ying He,
Weimin Zhou,
L. H. Cao,
Hongjie Liu,
Zili Zhao,
Wen Xu,
Chen Jiao,
Wei Hong,
Yuqiu Gu,
Baohan Zhang,
Xiaofang Wang
Publication year - 2011
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.3666041
Subject(s) - plasma , plasma acceleration , laser , atomic physics , acceleration , pulse (music) , physics , electron density , electron , cathode ray , raman scattering , raman spectroscopy , optics , nuclear physics , classical mechanics , detector
In the laser wakefield acceleration, the generation of electron beam is very sensitive to the plasma density. Not only the laser-wakefield interaction, but also the electron trapping and acceleration would be effected by the plasma density. However, the plasma density could be changed in the experiment by different reasons, which will result in the mismatch of parameters arranged initially. Forward Raman scattering spectrum demonstrated that the interaction density was decreased obviously in the experiment, which was verified by the pre-pulse conditions and two-dimensional particle-in-cell simulations. It was demonstrated that the plasma density was very important on the self-evolutions and energy coupling of laser pulse and wakefield, and eventually the energy spectrum of electron beam