8 research outputs found
High resolution measurements of partial photoionization cross sections in hollow lithium: a critical comparison with advanced many-body calculations
Photoelectron data for hollow lithium states obtained with unprecedented high spectral resolution and sensitivity are presented. A critical comparison is made with the most recent theoretical results. Partial cross sections are measured providing the first definitive test of advanced ab initio calculations for this highly excited four-body atomic system
Pure and Sb-doped SnO
We describe photoemission results from pure and
Sb-doped SnO2 nanoparticles deposited on gold substrates.
Photoelectron spectra with synchrotron radiation were recorded for
Sn 3d, Sb 3d and O 1s core levels and valence bands in the 500-1200 eV
energy range. For pure SnO2 nanoparticles the surface
is terminated by an oxygen rich layer with no obvious surface
environment for Sn. When doped n-type with 9.1% or 16.7% Sb,
dopant atoms are concentrated near the surface of the
nanoparticles. The valence state of the dopant atoms is
predominantly SbV. Plasmon satellite features are also
observed in core level photoemission spectra and their intensity
relative to the main peak increases with increasing photon energy