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Ultrafast electron diffraction optimized for studying structural dynamics in thin films and monolayers

A compact electron source specifically designed for time-resolved diffraction studies of free-standing thin films and monolayers is presented here. The sensitivity to thin samples is achieved by extending the established technique of ultrafast electron diffraction to the “medium” energy regime (1–10...

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Detalles Bibliográficos
Autores principales: Badali, D. S., Gengler, R. Y. N., Miller, R. J. D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Crystallographic Association 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4866961/
https://www.ncbi.nlm.nih.gov/pubmed/27226978
http://dx.doi.org/10.1063/1.4949538
Descripción
Sumario:A compact electron source specifically designed for time-resolved diffraction studies of free-standing thin films and monolayers is presented here. The sensitivity to thin samples is achieved by extending the established technique of ultrafast electron diffraction to the “medium” energy regime (1–10 kV). An extremely compact design, in combination with low bunch charges, allows for high quality diffraction in a lensless geometry. The measured and simulated characteristics of the experimental system reveal sub-picosecond temporal resolution, while demonstrating the ability to produce high quality diffraction patterns from atomically thin samples.