Characteristics of a tapered capillary plasma waveguide for laser wakefield acceleration

Journal Article · Mon May 20 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4807440· OSTI ID:22162952

Kim, M. S.; Jang, D. G.; Lee, T. H.; Nam, I. H. ^[1]; Lee, I. W.; Suk, H. ^[1]

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1. Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), Cheomdan-gwagiro, Buk-gu, Gwangju 500-712 (Korea, Republic of)

We developed a gas-filled capillary with a tapered density for laser wakefield acceleration, of which the tapering was realized by employing gas feed-lines with different cross-sections. Plasma diagnostics show that the capillary plasma has a significant longitudinal density tapering and a transverse parabolic profile. By using the tapered capillary plasma, high transmission (over 90%) of laser beams, meaning good optical guiding, was observed. These results demonstrate the potential of the tapered plasma source for high-energy laser wakefield acceleration, where the dephasing problem is minimized.

• OSTI ID: 22162952
• Journal Information: Applied Physics Letters, Vol. 102, Issue 20; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATION
BEAMS
CAPILLARIES
CROSS SECTIONS
DENSITY
LASER RADIATION
PLASMA DENSITY
PLASMA DIAGNOSTICS
TRANSMISSION
WAKEFIELD ACCELERATORS