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The Evolution of Ultrafast Electron Microscope Instrumentation.
- Source :
- Microscopy & Microanalysis; Aug2009, Vol. 15 Issue 4, p272-281, 10p
- Publication Year :
- 2009
-
Abstract
- Extrapolating from a brief survey of the literature, we outline a vision for the future development of time-resolved electron probe instruments that could offer levels of performance and flexibility that push the limits of physical possibility. This includes a discussion of the electron beam parameters (brightness and emittance) that limit performance, the identification of a dimensionless invariant figure of merit for pulsed electron guns (the number of electrons per lateral coherence area, per pulse), and calculations of how this figure of merit determines the trade-off of spatial against temporal resolution for different imaging modes. Modern photonics' ability to control its fundamental particles at the quantum level, while enjoying extreme flexibility and a very large variety of operating modes, is held up as an example and a goal.We argue that this goal may be approached by combining ideas already in the literature, suggesting the need for large-scale collaborative development of next-generation time-resolved instruments. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14319276
- Volume :
- 15
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Microscopy & Microanalysis
- Publication Type :
- Academic Journal
- Accession number :
- 43405109
- Full Text :
- https://doi.org/10.1017/S1431927609090394