Excited rotational states of molecules in a superfluid

Autor:	Cherepanov, Igor N., Bighin, Giacomo, Schouder, Constant A., Chatterley, Adam S., Albrechtsen, Simon H., Muñoz, Alberto Viñas, Christiansen, Lars, Stapelfeldt, Henrik, Lemeshko, Mikhail
Rok vydání:	2021
Předmět:	Physics - Chemical Physics Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Quantum Gases Physics - Atomic and Molecular Clusters Quantum Physics
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.104.L061303
Popis:	We combine experimental and theoretical approaches to explore excited rotational states of molecules embedded in helium nanodroplets using CS$_2$ and I$_2$ as examples. Laser-induced nonadiabatic molecular alignment is employed to measure spectral lines for rotational states extending beyond those initially populated at the 0.37 K droplet temperature. We construct a simple quantum mechanical model, based on a linear rotor coupled to a single-mode bosonic bath, to determine the rotational energy structure in its entirety. The calculated and measured spectral lines are in good agreement. We show that the effect of the surrounding superfluid on molecular rotation can be rationalized by a single quantity -- the angular momentum, transferred from the molecule to the droplet. Comment: 5 pages, 4 figures; 5 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2107.00468 Zobrazit plný text záznamu View this record from Arxiv