This project investigates contamination effects in negative ion sources used for accelerator mass spectrometry particularly relevant for the measurement of ultra-trace amounts of the long-lived radionuclides Chlorine-36 and Iodine-129 in environmental samples.
Electron and positron scattering processes are both complex and important in a range of processes. This project will use the R-Matrix technique to perform ab initio calculations of positron and electron scattering from OH, H2O and H2O2.
We measure the basic forces that operate between molecules that are manifest at interfaces. These forces control the stability of colloidal systems from blood to toothpaste. We use very sensitive techniques that are able to measure tiny forces with sub nanometer distance resolution. Understanding these forces enables us to predict how a huge variety of colloidal systems will behave.