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A compact electron gun for time-resolved electron diffraction

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Figure

FIG. 1. A schematic diagram (not to scale) of the TRED apparatus showing A) Ti:Sapphire laser, B) 70:30 beam splitter, C) third-harmonic-generation setup, D) high-voltage feed through, E) electron ionization laser path, F) delay stage, G) photocathode, H)
FIG. 2. A cut-through diagram of the electron-gun chamber showing A) photocathode, B) electrode, C) ceramic tube, D) high-voltage feed through, E) high-voltage pin, F) anode plate, and G) anode plug
FIG. 3. The number of 45 keV electrons passing through a 1 mm diameter aperture in the anode, with respect to the axis angle of the second harmonic generation crystal
FIG. 5. a) Comparison of diffraction intensities from experiments with the magnetic lens off (top), and on (bottom); the curves are offset for clarity

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