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Nonadiabatic Laser-Induced Alignment Dynamics of Molecules on a Surface
- Source :
- Phys. Rev. Lett. 131, 053201 (2023)
- Publication Year :
- 2023
-
Abstract
- We demonstrate that a sodium dimer, Na$_{2}$($1^3\Sigma_{u}^+$), residing on the surface of a helium nanodroplet, can be set into rotation by a nonresonant 1.0 ps infrared laser pulse. The time-dependent degree of alignment measured, exhibits a periodic, gradually decreasing structure that deviates qualitatively from that expected for gas phase dimers. Comparison to alignment dynamics calculated from the time-dependent rotational Schr\"{o}dinger equation shows that the deviation is due to the alignment dependent interaction between the dimer and the droplet surface. This interaction confines the dimer to the tangential plane of the droplet surface at the point where it resides and is the reason that the observed alignment dynamics is also well-described by a 2D quantum rotor model.<br />Comment: 6 pages, 4 figures
- Subjects :
- Physics - Atomic and Molecular Clusters
Physics - Chemical Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 131, 053201 (2023)
- Publication Type :
- Report
- Accession number :
- edsarx.2308.15247
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.131.053201