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    United Kingdom

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PhD projects

Theoretical and computational studies of ultrafast dynamics in laser-driven atoms

1991 …2020

Research output per year

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Personal profile


Hugo van der Hart was appointed as a Lecturer at Queen's in 1999. He was promoted to Reader in 2006 and to Professor in 2011. He obtained his Ph.D. in 1994 from the University of Amsterdam. He then took up a Marie Curie Fellowship at Queen's, followed by postdoctoral positions at JILA/University of Colorado and the University of Oxford.

Research Interests

His main research interests concern the response of atoms to intense laser light, and the application of B-spline basis sets in atomic physics. He has extensive experience with the R-matrix-Floquet approach for atoms in long laser pulses, including the study of double ionization following two-photon absorption. Since 2006, he has been working on the development of time-dependent methods within R-matrix theory.

The main aim of the development of time-dependent R-matrix methods is the development of capcbility to describe how the interaction between electrons affects the overall atomic dynamics, including the dynamics in an intense laser field. Examples of processes in which a multi-electron response plays a critical role are
- ultra-fast dynamics within an atomic configuration
- harmonic generation in atomic ions such as Ar+

The accurate determination of atomic properties in intense fields requires large-scale atomic codes. Hence, great emphasis is placed on the efficient exploitation of high-performance computing facilities, using both MPI and OpenMP.

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Research Output

Electron rotational asymmetry in strong-field photodetachment from F- by circularly polarized laser pulses

Armstrong, G. S. J., Clarke, D. D. A., Brown, A. C. & Van Der Hart, H. W., 26 Feb 2019, In : Physical Review A (Atomic, Molecular, and Optical Physics). 99, 2, 9 p., 023429.

Research output: Contribution to journalArticle

Open Access
  • 1 Citation (Scopus)
    182 Downloads (Pure)
    Open Access
  • 36 Downloads (Pure)

    Resolving Ultra-Fast Spin-Orbit Dynamics in Heavy Many-Electron Atoms

    Wragg, J., Clarke, D. D. A., Armstrong, G. S. J., Brown, A. C., Ballance, C. P. & Van Der Hart, H. W., 15 Oct 2019, In : Physical Review Letters. 6 p.

    Research output: Contribution to journalArticle

    Open Access
  • 59 Downloads (Pure)
  • The R-matrix with time dependence (RMT) code

    Brown, A., Van Der Hart, H., Armstrong, G., Wragg, J., Clarke, D., Gorfinkiel, J., Benda, J. & Masin, Z., 11 Nov 2019

    Research output: Non-textual formSoftware

  • Datasets

    Extreme-ultraviolet-initiated High-harmonic Generation in Ar+

    Clarke, D. (Creator), Queen's University Belfast, 09 Feb 2018



    Rotational asymmetry in photodetachment from F- in circularly polarised laser fields

    Armstrong, G. (Creator), Clarke, D. (Creator), Brown, A. (Creator), Van Der Hart, H. (Creator), Queen's University Belfast, 06 Feb 2019



    Modeling tomographic measurements of photoelectron vortices in counter-rotating circularly polarized laser pulses

    Armstrong, G. (Creator), Clarke, D. (Creator), Wragg, J. (Creator), Brown, A. (Creator), Van Der Hart, H. (Creator), Queen's University Belfast, 05 Nov 2019



    Electron vortices in He and F-

    Brown, A. (Creator), Clarke, D. (Creator), Van Der Hart, H. (Creator), Armstrong, G. (Creator), Queen's University Belfast, 25 Oct 2018



    Inner shell photoionization of Carbon

    Rey Pereira, H. (Creator), Queen's University Belfast, 06 May 2015




    European Union Individual Marie Curie Fellowship

    Hugo Van Der Hart (Recipient), Sep 1994

    Prize: Fellowship awarded competitively