500-fs photoelectron gun for time-resolved electron diffraction experiments

Mikhail Ya. Schelev; Gennadii I. Bryukhnevich; Valerij I. Lozovoi; Mikhail A. Monastyrski; Alexander M. Prokhorov; Alexander V. Smirnov; Nikolai S. Vorobiev

doi:10.1117/1.601743

1 August 1998 500-fs photoelectron gun for time-resolved electron diffraction experiments

Mikhail Ya. Schelev; Gennadii I. Bryukhnevich; Valerij I. Lozovoi; Mikhail A. Monastyrski; Alexander M. Prokhorov; Alexander V. Smirnov; Nikolai S. Vorobiev

Author Affiliations +

Optical Engineering, 37(8), (1998). doi:10.1117/1.601743

Abstract

A photoelectron gun as a source of a photoinduced, monoenergetic (energy spread <0.5 eV), well-collimated (divergence <0.5 deg), sharp (diameter <0.7 mm at the 1/e level), and ultrashort (²500 fs) bunch of electrons to be used for time-resolved electron diffraction (TRED) experiments is computer designed, assembled, and tested. in single-shot mode, it generates up to 103 of 30 keV electrons, and the electron pulse can be either measured in streak mode or focused onto a solid state target chosen from a set of interchangeable targets. High temporal resolution enables measurement with femtosecond precision of the diffraction pattern perturbation after the exiting laser radiation drops onto a target. Demonstration experiments with a 300- A1 target in transmission-type mode result in diffraction images of reasonable quality under accumulation of up to 4 x 104 500-fs photoelectron pulses.

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Mikhail Ya. Schelev, Gennadii I. Bryukhnevich, Valerij I. Lozovoi, Mikhail A. Monastyrski, Alexander M. Prokhorov, Alexander V. Smirnov, Nikolai S. Vorobiev, "500-fs photoelectron gun for time-resolved electron diffraction experiments," Optical Engineering 37(8), (1 August 1998). https://doi.org/10.1117/1.601743

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