Open AccessDensity measurement and MHD simulation ofgas-filled capillary discharge waveguide
Author(s) -
Yu Gu,
Zhiming Ma,
Wudi Zheng,
Xiaofang Wang,
Wu Yuchi,
Bin Zhu,
Keyan Dong,
Liangcai Cao,
He Ying-Ling,
Hongjie Liu,
Hong Wang,
Weimin Zhou,
Ziqi Zhao,
Baohan Zhang,
Chen Jiao,
Wen Xu,
Zang Hua-Ping,
Jinqing Yu,
Lai Wei
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.095202
Subject(s) - plasma , waveguide , laser , instability , magnetohydrodynamics , pulse (music) , capillary action , materials science , electron density , electron , optics , diffraction , physics , atomic physics , computational physics , mechanics , nuclear physics , composite material , detector
To accelerate the electrons efficiently in the laser wake-field accelerator, it is necessary to suppress the instability induced by the diffraction and the defocusing of the laser pulse. The gas-filled capillary discharge waveguide can generate an approximately parabolic density distribution, which can guide the laser pulse efficiently and suppress the instability. Using the Stark effect, this plasma density distribution is measured in this paper, and the relationship between plasma density and filled pressure is presented. By using the MHD code CRMHA, the formation of the capillary waveguide is simulated and researched in detail.