期刊
APPLIED PHYSICS LETTERS
卷 99, 期 14, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3643134
关键词
discharges (electric); hydrogen; interferometry; plasma accelerators; plasma density; plasma diagnostics; plasma light propagation; spectroscopy; Stark effect; wakefield accelerators
资金
- National Research Foundation of Korea (NRF)
- Korea government (MEST) [2011-0000337, R15-2008-006-01001-0]
Plasma density is one of the most important parameters for laser wakefield acceleration using a gas-filled capillary waveguide. We measured the evolving hydrogen plasma densities in capillary discharge by using two different diagnostics methods at the same time, i.e., the Stark-effect-based spectroscopy and the transverse interferometry methods. It was found that there is a rather large difference between two methods and the phenomenon is explained in view of self-absorption. The correlation was obtained and the result is quite useful for capillary-plasma-based laser wakefield acceleration research. (C) 2011 American Institute of Physics. [doi:10.1063/1.3643134]
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