25 May 2011 Complete characterization of laser wakefield acceleration
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Abstract
We report on measurement techniques of the charge, spectrum, divergence, transverse emittance and the first real-time observation of the accelerated electron pulse and the accelerating plasma wave. Our time-resolved study allows a singleshot measurement of the electron bunch duration providing a value of 5.8 +1.9 -2.1 fs full-width at half maximum (2.5+0.8 -0.9 fs root mean square) as well as the plasma wave with a density-dependent period of 12-22 fs. It reveals the evolution of the bunch, its position in the surrounding plasma wave and the wake dynamics. The results afford promise for brilliant, sub-angstrom-wavelength ultrafast electron and photon sources for diffraction imaging with atomic resolution in space and time.
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Laszlo Veisz, Alexander Buck, Maria Nicolai, Karl Schmid, Chris M. S. Sears, Alexander Sävert, Julia M. Mikhailova, Ferenc Krausz, Malte C. Kaluza, "Complete characterization of laser wakefield acceleration", Proc. SPIE 8079, Laser Acceleration of Electrons, Protons, and Ions; and Medical Applications of Laser-Generated Secondary Sources of Radiation and Particles, 807906 (25 May 2011); doi: 10.1117/12.890952; https://doi.org/10.1117/12.890952
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