SYNOPSIS:
A basic description of the charge exchange processes which can occur when low energy ions are incident upon a surface. These will be related to quantification of charge fractions near surfaces and the impact on surface composition estimates.
ABOUT THE SPEAKER:
Professor of Physics, University of Newcastle (Australia) and was the head of the School of Mathematical and Physical Sciences for over 12 years.
Professor John O’Connor has extensive experience in surface structure and composition analysis using Ion Surface Scattering with ions of energy from 100eV to 100 MeV. He has been particularly active in developing enhancements to obtain composition information of materials over ranges from the first atomic layer to the first 1-10 nm of a material.
His research interests are in materials science, radiation effects in medical physics, radiation resistant materials for potential use in high radiation environments and science communication.