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Statut |
Confirmé |
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Série |
SEM-BESSON |
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Domaines |
cond-mat |
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Date |
Vendredi 11 Fevrier 2011 |
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Heure |
11:00 |
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Institut |
IMPMC |
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Salle |
4ème Etage, Tour 22-23, Salle 1, 4 place jussieu, Paris |
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Nom de l'orateur |
De Groot |
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Prenom de l'orateur |
Frank |
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Addresse email de l'orateur |
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Institution de l'orateur |
Debye Institute of Nanomaterials Science, Utrecht University, Netherlands |
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Titre |
X-ray spectroscopy: new developments in theory and experiment |
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Résumé |
New developments in x-ray absorption spectroscopy and resonant inelastic x-ray scattering will be discussed. First an introduction is given of x-ray absorption spectroscopy, including the multiplet interpretation of XAS spectral shapes [1,2]. Examples are given from the use of X-ray magnetic circular dichroism (X-MCD) [3] and the effects of pi-bonding on iron complexes [4]. With the recent developments in nanoreactors, scanning transmission x-ray microscopy (STXM) experiments make it possible to follow metal L edges at 1 bar and 500 C, with a spatial resolution of 20 nm. This allows the in-situ spectroscopic study of a single nanoparticle (in action) [5]. A comparison will be made between x-ray and electron spectromicroscopy and some future directions of spectromicroscopy of nanomaterials are given. [6,7]. The last part of the talk deals with the role of resonant inelastic x-ray scattering (RIXS) to unravel the nature of the surface of small metal nanoparticles. |
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Numéro de preprint arXiv |
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Commentaires |
Invité par Amélie Juhin |
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Fichiers attachés |
- SeminDEGROOT2011.pdf (128619 bytes)
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