A compact electron gun for time-resolved electron diffraction

Journal Article · Thu Jan 15 00:00:00 EST 2015 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4905335· OSTI ID:22392307

Robinson, Matthew S.; Lane, Paul D.

A novel compact time-resolved electron diffractometer has been built with the primary goal of studying the ultrafast molecular dynamics of photoexcited gas-phase molecules. Here, we discuss the design of the electron gun, which is triggered by a Ti:Sapphire laser, before detailing a series of calibration experiments relating to the electron-beam properties. As a further test of the apparatus, initial diffraction patterns have been collected for thin, polycrystalline platinum samples, which have been shown to match theoretical patterns. The data collected demonstrate the focusing effects of the magnetic lens on the electron beam, and how this relates to the spatial resolution of the diffraction pattern.

• OSTI ID: 22392307
• Journal Information: Review of Scientific Instruments, Vol. 86, Issue 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CALIBRATION
DESIGN
ELECTRON BEAMS
ELECTRON DIFFRACTION
ELECTRON GUNS
FOCUSING
LENSES
MOLECULAR DYNAMICS METHOD
PLATINUM
POLYCRYSTALS
SOLID STATE LASERS
SPATIAL RESOLUTION
TIME RESOLUTION