Electron Pulse Compression with a Practical Reflectron Design for Ultrafast Electron Diffraction

Abstract

Ultrafast electron diffraction (UED) is a powerful method for studying time-resolved structural changes. Currently, space charge induced temporal broadening prevents obtaining high brightness electron pulses with sub-100 fs durations limiting the range of phenomena that can be studied with this technique. We review the state of the the art of UED in this respect and propose a practical design for reflectron based pulse compression which utilizes only electro-static optics and has a tunable temporal focal point. Our simulation shows that this scheme is capable of compressing an electron pulse containing 100,000 electrons with 60:1 temporal compression ratio.

11 pages, 9 figures

References in corpus (2)

• Evidence for a Structurally-driven Insulator-to-metal Transition in VO2: a View from the Ultrafast Timescale
• New electron source concept for single-shot sub-100 fs electron diffraction in the 100 keV range

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• Attomicroscopy: from Femtosecond to Attosecond Electron Microscopy
• All-optical three-dimensional electron pulse compression
• Terahertz-optical intensity grating for creating high-charge, attosecond electron bunches