12 Result(s)

Chapter

Ab Initio Methods for Few- and Many-Electron Atomic Systems in Intense Short-Pulse Laser Light

We describe how we have developed an ab initio method for solving the time-dependent Schrödinger equation for multielectron atomic systems exposed to intense short-pulse laser light. Our starting point for this d...

M. A. Lysaght, L. R. Moore, L. A. A. Nikolopoulos, J. S. Parker… in Quantum Dynamic Imaging (2011)

Article

Laser-driven helium at 780 nm

We briefly review the methods under development at Queen’s University Belfast to solve the full-dimensionality time-dependent Schrödinger equation for helium in intense laser fields. We set out the computation...

K. T. Taylor, J. S. Parker, K. J. Meharg… in The European Physical Journal D - Atomic, … (2003)

Article

Dissociative ionization of molecules in intense laser fields

Accurate and efficient grid based techniques for the solution of the time-dependent Schrödinger equation for few-electron diatomic molecules irradiated by intense, ultrashort laser pulses are described. These ...

D. Dundas, K. J. Meharg, J. F. McCann… in The European Physical Journal D - Atomic, … (2003)

Chapter

Numerical Grid Methods

Over recent years in Belfast we have developed numerical grid methods for solving the two-electron time-dependent Schrödinger equation (TDSE) in its full-dimensionality 1–4]. We have specifically had in mind d...

K. T. Taylor, J. S. Parker, D. Dundas… in Many-Particle Quantum Dynamics in Atomic a… (2003)

Chapter

Atoms in Crossed Fields

J.-P. Connerade, K. T. Taylor, G. Droungas… in Atoms and Molecules in Strong External Fie… (2002)

Chapter

The Multiphoton and Electron Collisions Consortium and the Helium Code

The Multiphoton and Electron Collisions Consortium is formed from groups of scientists working at problems demanding High Performance Computing resource at the following institutions:

Chapter

Multiphoton Processes in a Two-Electron Atom Using a Cray T3D

Many-electron atoms interacting with intense coherent radiation presents many new challenges for the theorist. Theory was stimulated enormously in recent years by the discovery of high harmonic generation in c...

K. T. Taylor, J. S. Parker, D. Dundas… in Photon and Electron Collisions with Atoms … (1997)

Chapter

Theory of the Zeeman Effect in Highly Excited Atoms

This paper will be concerned with the quantum mechanical theory and associated calculations developed to treat atoms in strong laboratory strength (1–5 tesla) magnetic fields. These developments began in the e...

K. T. Taylor in Atoms in Strong Fields (1990)

Chapter

Photoabsorption and Photoionizaton of an Atom in a Magnetic Field

There have been many new developments in the analysis of the quadratic Zeeman effect, both in theory and experiment since the last meeting (Nayfeh and Clark.¹New high resolution experiments on hydrogen have revea...

P. F. O’Mahony, M. A. Al-Laithy… in Atomic Spectra and Collisions in External … (1988)

Chapter

Wavefunction Localization for the Hydrogen Atom in Parallel External Electric and Magnetic Fields

A quantum mechanical study of a simple two dimensional problem identifies lines in coordinate space about which the probability densities are localized. These lines in general do not correspond to extrema in t...

S. Bivona, P. F. O’Mahony, K. T. Taylor in Atomic Spectra and Collisions in External Fields (1988)

Article

Dynamical symmetry in the quadratic Zeeman effect

Zimmerman, Kash and Kleppner¹ have recently posulated the existence of a ‘hidden’ symmetry in atomic hydrogen in a uniform magnetic field. We have drawn similar conclusions from independent work². Here, we show t...

C. W. Clark, K. T. Taylor in Nature (1981)