Dissociative ionization of molecules in intense laser fields

D. Dundas; K. J. Meharg; J. F. McCann; K. T. Taylor

doi:10.1140/epjd/e2003-00082-0

EPJ

Dissociative ionization of molecules in intense laser fields

D. Dundas^a, K. J. Meharg, J. F. McCann and K. T. Taylor

Department of Applied Mathematics and Theoretical Physics, Queen's University Belfast, University Road, Belfast BT7 1NN, Northern Ireland, UK

Received: 19 November 2002
Published online: 24 April 2003

Abstract

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 are based on hybrid finite-difference, Lagrange mesh techniques. The methods are applied in three scenarios, namely H

with fixed internuclear separation, H

with vibrating nuclei and H₂ with fixed internuclear separation and illustrative results presented.

PACS: 02.60.Cb – Numerical simulation; solution of equations / 02.70.Bf – Finite-difference methods / 33.80.Rv – Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states) / 33.80.-b – Photon interactions with molecules