Instrumentation for time-resolved electron diffraction spanning the time domain from microseconds to picoseconds

by Lobastov, V. A.; Ewbank, J. D.; Schafer, L.; Ischenko, A. A.

Recent instrumental improvements which successfully extend the time resolution of pulsed beam electron diffraction to the picosecond regime are described. Based on modifications of an existing nanosecond apparatus, a;new sample inlet system, electron pulse generation laser, and amplified detector have been incorporated into the design such that significant improvements in both the signal level and ultimate time resolution are achieved; an upper estimate of the electron pulse width is similar to 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.

Journal
Review of Scientific Instruments
Volume
69
Issue
7
Year
1998
Start Page
2633-2643
URL
https://dx.doi.org/10.1063/1.1148991
ISBN/ISSN
1089-7623; 0034-6748
DOI
10.1063/1.1148991