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Title: New electron source concept for single-shot sub-100 fs electron diffraction in the 100 keV range

Authors: T. van Oudheusden (1), E. F. de Jong (1), B. J. Siwick (2), S. B. van der Geer (1), W. P. E. M. Op 't Root (1), O. J. Luiten (1) ((1) Department of Applied Physics, Eindhoven University of Technology, Eindhoven, The Netherlands, (2) Departments of Physics and Chemistry, McGill University, Montreal, Canada)
View PDF Abstract: We present a method for producing sub-100 fs electron bunches that are suitable for single-shot ultrafast electron diffraction experiments in the 100 keV energy range. A combination of analytical results and state-of-the-art numerical simulations show that it is possible to create 100 keV, 0.1 pC, 20 fs electron bunches with a spotsize smaller than 500 micron and a transverse coherence length of 3 nm, using established technologies in a table-top set-up. The system operates in the space-charge dominated regime to produce energy-correlated bunches that are recompressed by established radio-frequency techniques. With this approach we overcome the Coulomb expansion of the bunch, providing an entirely new ultrafast electron diffraction source concept. View a PDF of the paper titled New electron source concept for single-shot sub-100 fs electron diffraction in the 100 keV range, by T. van Oudheusden (1) and 12 other authors
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