Interactions of X-rays with matter

This research involves critical study of atom-photon interactions by accurate determination of the complex atomic form factors. Photon-atom interaction cross-sections are important in many fields of fundamental and applied physics. As many uncritical applications are well established, researchers and users outside the field have assumed that experiment and theory have converged with no further critical goals in this area. This assumption is seriously flawed for all elements in many energy regions.

We have developed a novel experimental technique called the X-ray Extended Range Technique (XERT) for accurately determining these cross-sections. The project will apply XERT in the investigation of the angular dependence of X-ray scattering and fluorescence using polychromatic sources.