Molecular alignment of fragmenting H{sub 2}{sup +} and H{sub 2} in strong laser fields

Journal Article · Sat Oct 15 04:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.045402· OSTI ID:20718829

Uhlmann, Mathias; Kunert, Thomas; Schmidt, Ruediger ^[1]

---

1. Institut fuer Theoretische Physik, Technische Universitaet Dresden, D-01062 Dresden (Germany)

We present time-dependent ab initio calculations of fragmenting H{sub 2}{sup +} and H{sub 2} molecules in strong laser fields, taking into account all nuclear and electronic degrees of freedom. In particular, very different and apparently contradicting experimental observations on the alignment of fragmenting hydrogen molecules are naturally explained and consistently interpreted. In addition, striking differences in the alignment of fragmenting H{sub 2}{sup +} and H{sub 2} are predicted. Whereas H{sub 2} fragments show decreasing alignment with increasing laser intensity, the alignment of H{sub 2}{sup +} fragments is nearly independent of the intensity. This is in contrast to existing intuitive expectations, but in accord with available experimental data.

• OSTI ID: 20718829
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALIGNMENT
DEGREES OF FREEDOM
HYDROGEN
HYDROGEN IONS 2 PLUS
LASER RADIATION
MOLECULES
PHOTON-MOLECULE COLLISIONS
TIME DEPENDENCE