Laser-induced rotation of iodine molecules in He-nanodroplets: revivals and breaking-free
| Autor: | Anders A. Søndergaard, Benjamin Shepperson, Jan Kaczmarczyk, Mikhail Lemeshko, Lars Christiansen, Henrik Stapelfeldt, Robert E. Zillich |
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| Rok vydání: | 2017 |
| Předmět: |
DYNAMICS
Atomic Physics (physics.atom-ph) General Physics and Astronomy chemistry.chemical_element FOS: Physical sciences Rotation INTEGRAL MONTE-CARLO 01 natural sciences 7. Clean energy Fluence Physics - Atomic Physics Physics - Chemical Physics 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Physics::Atomic and Molecular Clusters Physics - Atomic and Molecular Clusters Physics::Chemical Physics 010306 general physics Quantum Helium Physics Chemical Physics (physics.chem-ph) SPECTROSCOPY Condensed Matter - Mesoscale and Nanoscale Physics 010304 chemical physics DROPLETS FIELDS 3. Good health Condensed Matter - Other Condensed Matter ALIGNMENT COLLOQUIUM Thermalisation Solvation shell QUANTUM-SYSTEMS chemistry GROUND-STATE Picosecond Quasiparticle COMPLEXES Atomic physics Atomic and Molecular Clusters (physics.atm-clus) Other Condensed Matter (cond-mat.other) |
| Zdroj: | Shepperson, B, Sondergaard, A A, Christiansen, L, Kaczmarczyk, J, Zillich, R E, Lemeshko, M & Stapelfeldt, H 2017, ' Laser-Induced Rotation of Iodine Molecules in Helium Nanodroplets : Revivals and Breaking Free ', Physical Review Letters, vol. 118, no. 20, 203203 . https://doi.org/10.1103/PhysRevLett.118.203203 |
| DOI: | 10.48550/arxiv.1702.01977 |
| Popis: | Rotation of molecules embedded in He nanodroplets is explored by a combination of fs laser-induced alignment experiments and angulon quasiparticle theory. We demonstrate that at low fluence of the fs alignment pulse, the molecule and its solvation shell can be set into coherent collective rotation lasting long enough to form revivals. With increasing fluence, however, the revivals disappear -- instead, rotational dynamics as rapid as for an isolated molecule is observed during the first few picoseconds. Classical calculations trace this phenomenon to transient decoupling of the molecule from its He shell. Our results open novel opportunities for studying non-equilibrium solute-solvent dynamics and quantum thermalization. Comment: 6+7 pages; 4+1 figures; 1 table |
| Databáze: | OpenAIRE |
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