학술논문
Direct measurement of the wakefield excited by a high-power microwave pulse in plasma.
Document Type
Article
Author
Source
Subject
*PLASMA oscillations
*ELECTRIC fields
*MICROWAVE plasmas
*MICROWAVES
*DIELECTRICS
*LASERS
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*
*
*
*
Language
ISSN
1070-664X
Abstract
An experimental method to measure the electric fields existing in a plasma wake produced by a ∼0.24 GW, ∼0.5 ns, 9.5 GHz microwave pulse traversing a plasma-filled waveguide is presented. The intensity of the second harmonic of a 30 fs 800 nm laser generated inside a gas-filled dielectric tube placed inside the waveguide is used to characterize the wakefield parameters. Three distinct decaying oscillations of the plasma wakefield, with peak amplitude of ∼20 kV/cm, were observed. The experimental results were confirmed by 3D large-scale plasma particle-in-cell simulations. [ABSTRACT FROM AUTHOR]