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Kwon, Oh Hoon
Ultrafast Laser Spectroscopy and Nano-microscopy (ULSaN Lab)
Research Interests
  • Femtochemistry/biology, 4D electron microscopy, structural dynamics, materials phenomena

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EELS femtosecond resolved in 4D ultrafast electron microscopy

Cited 22 times inthomson ciCited 26 times inthomson ci
Title
EELS femtosecond resolved in 4D ultrafast electron microscopy
Author
Carbone, FabrizioBarwick, BrettKwon, Oh HoonPark, Hyun SoonBaskin, J. SpencerZewail, Ahmed H.
Issue Date
2009-01
Publisher
ELSEVIER SCIENCE BV
Citation
CHEMICAL PHYSICS LETTERS, v.468, no.4-6, pp.107 - 111
Abstract
Electron energy loss spectroscopy (EELS) is a powerful tool in the study of valency, bonding and structure of solids. Previously, EEL spectra were either time-integrated or at best time-resolved on the millisecond to seconds scale, being limited by video rates and detector responses. Here, using our 4D electron microscope, we report ultrafast EELS, taking the time resolution in the energy-time space into the femtosecond regime, a 10 order of magnitude increase, and for a table-top apparatus. It is shown that the energy-time-amplitude space of graphite is selective to changes, especially in the electron density of the π + σ plasmon of the collective oscillation of the four electrons of carbon.
URI
https://scholarworks.unist.ac.kr/handle/201301/8739
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=58149391629
DOI
10.1016/j.cplett.2008.12.027
ISSN
0009-2614
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CHM_Journal Papers
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