Intense Laser-Atom Interactions

Last updated October 20, 2017 by Ian Stewart

This area incorporates the activities of two academic staff (Hugo van der Hart, and Andrew Brown), two research fellows (Jack Wragg and Gregory Armstrong), two early stage researchers and several PhD students. The group also has strong connections with Daniel Dundas in the Atomistic Simulation Centre at QUB.

A large part of our research is in exploiting massively parallel computers to address detailed electronic effects in laser-atom interactions. This work has led to the development of several world leading computer codes, notably the HELIUM method- a fully dimensional integration of the Schrödinger equation for laser interaction with few electron atoms, and the Time-dependent R-matrix (TDRM) method- an ab initio, fully non-perturbative method for treating general multielectron atoms and ions in ultrashort laser pulses. Most recently, the efforts of the group have converged in the form of the R-matrix with time-dependence (RMT) code, which combines the state of the art grid-based techniques of the HELIUM code with the basis set method developed for TDRM.

Other areas of research in the group include:

  • R-matrix Floquet theory for multiphoton processes
  • Analytical treatment of strong-field processes
  • Ultrashort intense laser-molecule dynamics

Members of the group form part of the UK-RAMP consortium- a collaboration on electron atom and molecule scattering with multiphoton interactions involving researchers at QUB, the Open University, the Daresbury Laboratory and University College London.

Work is funded by the Northern Ireland Department of Employment and Learning, the UK EPSRC and the 7th framework programme of the EU.


We are a Research Cluster of the School of Mathematics and Physics at Queen’s University Belfast in Northern Ireland. Our research interests are focused primarily on computational and theoretical physics.

Old Physics Building

The Old Physics Building,
where CTAMOP is situated.