Synchrotron radiation spectroscopy. V Atomic and molecular spectroscopy.

Photoelectron Spectroscopy with Synchrotron Radiation

This article intends to give an overview of the capabilities of photoelectron spectroscopy !n determining the electronic structure of bulk solids, thin films, and surfaces. Particular :mphasis is placed on the use of synchrotron radiation as a tunable, polarized, and wellzollimated light source. Current trends in the field are higlilighted, and examples from the wthor's recent experience are gi...

Optical spectroscopy of atomic and molecular positronium

Positronium (Ps) is a purely leptonic hydrogen-like atom formed from an electron and a positron. Since the interactions of electrons and positrons are thought to be almost entirely electromagnetic, precision measurements of the Ps energy levels should constitute a good test of QED theory. The ultimate precision is limited by the rapid annihilation of the various Ps states and the number of Ps a...

Synchrotron Radiation Infrared and Raman Spectroscopy for Biomedical Applications

Over the last few decades, infrared (IR) spectroscopy has been recognized as a useful tool to obtain quantitative and qualitative information on IR active materials and bio-materials, with particular emphasis to polymer chemistry and organic chemistry. Nowadays, thanks to technological evolution, the possibilities offered by vibrational spectroscopy (e.g. IR and Raman spectroscopy) are much bro...

Photoassociative molecular spectroscopy for atomic radiative lifetimes

When the atoms of a dimer remain most of the time very far apart, in so-called longrange molecular states, their mutual interaction is ruled by plain atomic properties. The highresolution spectroscopic study of some molecular excited states populated by photoassociation of cold atoms (photoassociative spectroscopy) gives a good illustration of this property. It provides accurate determinations ...

Free molecular and metal clusters studied by synchrotron radiation based electron spectroscopy