Professor Walters graduated MA, PhD from the University of Cambridge. He is a Member of the Royal Irish Academy, a Fellow of the American Physical Society, and a Fellow of the Institute of Physics. He was Head of the Applied Mathematics Teaching Division from 1998 to 2004 and was Director of the Centre for Theoretical Atomic, Molecular and Optical Physics from 2005-2008.
He has given many invited conference talks and seminars overseas and has been invited to talk at most of the major conferences in his field including the International Conference on Electronic, Photonic and Atomic Collisions, the European Conference on Atomic and Molecular Physics, the Gaseous Electronics Conference, the International Conference on Positron Annihilation. He has been on the international scientific committees of a number of conferences including the International Workshop on Low Energy Positron and Positronium Physics and the International Symposium on (e, 2e), Double Photoionisation and Related Topics. Most recently, he was Chairman of the XIV International Workshop on Low Energy Positron and Positronium Physics (Reading, 2007). He is a member of the Working Group of Collaborative Computational Project 2 (CCP2). He has served on the Editorial Board of Journal of Physics B and is Guest Editor for Nuclear Instruments and Methods B. He has edited a number of books including “New Directions in Atomic Physics” (Kluwer/Plenum, 1999).
His research interests lie in Theoretical and Computational Atomic Collision Physics. In particular, recent work has focused on antimatter collisions, ie, positrons, positronium, antiprotons and antihydrogen, and on atomic coincidence studies, such as (e, 2e), which are able to reveal the detailed mechanisms of atomic reactions.