Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines cond-mat
Date Vendredi 11 Fevrier 2011
Heure 11:00
Institut IMPMC
Salle 4ème Etage, Tour 22-23, Salle 1, 4 place jussieu, Paris
Nom de l'orateur De Groot
Prenom de l'orateur Frank
Addresse email de l'orateur
Institution de l'orateur Debye Institute of Nanomaterials Science, Utrecht University, Netherlands
Titre X-ray spectroscopy: new developments in theory and experiment
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.
Numéro de preprint arXiv
Commentaires Invité par Amélie Juhin
Fichiers attachés
  • SeminDEGROOT2011.pdf (128619 bytes) OPEN

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