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Proceedings Paper

Electron diffraction instrumentation at the University of Arkansas from continuous beams to picosecond pulses: 1983 to 1998
Author(s): John D. Ewbank; Vladimir A. Lobastov; Nikolai S. Vorobiev; Seong S. Seo; Anatoli A. Ischenko; Lothar Schaefer
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Paper Abstract

After a brief overview of time-resolved electron diffraction experiments on a nanosecond time scale, more recent instrumental improvements are described which successfully extend the time resolution of the apparatus to the picosecond regime. Modifications described include a new sample inlet system, intensified detector, and electron pulse generation laser. Taken together, they have led to significant improvements in both signal level and ultimate time resolution; an upper estimate of the electron pulse width is approximately 20 ps. Enhancements are such that, for operation in the nanosecond time domain, an entire diffraction pattern over a useful range of scattering angles may be collected from a gas-phase sample in a single electron pulse.

Paper Details

Date Published: 22 June 1999
PDF: 11 pages
Proc. SPIE 3516, 23rd International Congress on High-Speed Photography and Photonics, (22 June 1999); doi: 10.1117/12.350539
Show Author Affiliations
John D. Ewbank, Univ. of Arkansas (United States)
Vladimir A. Lobastov, Univ. of Arkansas (United States)
Nikolai S. Vorobiev, Univ. of Arkansas (United States)
Seong S. Seo, Univ. of Arkansas (United States)
Anatoli A. Ischenko, Univ. of Arkansas (United States)
Lothar Schaefer, Univ. of Arkansas (United States)

Published in SPIE Proceedings Vol. 3516:
23rd International Congress on High-Speed Photography and Photonics
Valentina P. Degtyareva; Mikhail A. Monastyrski; Mikhail Ya. Schelev; Alexander V. Smirnov, Editor(s)

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