Modelling laser-matter interactions for simple molecules

30th International Conference on Photonic, Electronic, and Atomic Collisions

Galstyan, A.^1 ; Popov, Yu.V.^2,4 ; Mota-Furtado, F.^3 ; O'Mahony, P.F.^3 ; Piraux, B.^1

Université Catholique de Louvain, Louvain-la-Neuve, Belgium^1

Lomonosov Moscow State University, Moscow, Russia^2

Department of Mathematics, Royal Holloway, University of London, United Kingdom^3

Joint Institute for Nuclear Research, Dubna, Russia^4

关键词: Atomic hydrogen;    Coulomb potential;    H2O molecules;    Ionization yield;    Laser-matter interactions;    Momentum spaces;    Separable potential;    Sum of products;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/4/032010/pdf
DOI  :  10.1088/1742-6596/875/4/032010

来源: IOP

【 摘 要 】

We consider the interaction of a molecule with an ultrashort laser pulse within the mean field approximation.a model has been generalized to treat the interaction of atomic hydrogen with an electromagnetic pulse. The kernel of the Coulomb potential in the momentum space is replaced by a sum of products of separable potentials supporting a bound state of the atom and built from the corresponding bound state wave function. The molecular orbitals are expressed in terms of Gaussians and generated by means of a quantum chemistry software. We analyze the ionization yield as a function of the size of the Gaussian basis for H2and H2O molecules and the results are compared to those already existing in the literature.