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Rydberg Molecules for Ion-Atom Scattering in the Ultracold Regime
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SYSNO ASEP 0489314 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Rydberg Molecules for Ion-Atom Scattering in the Ultracold Regime Author(s) Schmid, T. (DE)
Veit, C. (DE)
Zuber, N. (DE)
Löw, I. (DE)
Pfau, T. (DE)
Tarana, Michal (UFCH-W) ORCID
Tomza, M. (PL)Article number 153401 Source Title Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 120, č. 15 (2018)Number of pages 7 s. Language eng - English Country US - United States Keywords Ab initio calculations ; Experimental methods ; Interaction potentials Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry R&D Projects GP14-15989P GA ČR - Czech Science Foundation (CSF) Institutional support UFCH-W - RVO:61388955 UT WOS 000429777200006 EID SCOPUS 85045293184 DOI 10.1103/PhysRevLett.120.153401 Annotation We propose a novel experimental method to extend the investigation of ion-atom collisions from the so far studied cold, essentially classical regime to the ultracold, quantum regime. The key aspect of this method is the use of Rydberg molecules to initialize the ultracold ion-atom scattering event. We exemplify the proposed method with the lithium ion-atom system, for which we present simulations of how the initial Rydberg molecule wave function, freed by photoionization, evolves in the presence of the ion-atom scattering potential. We predict bounds for the ion-atom scattering length from ab initio calculations of the interaction potential. We demonstrate that, in the predicted bounds, the scattering length can be experimentally determined from the velocity of the scattered wave packet in the case of Li-6(+)-Li-6 and from the molecular ion fraction in the case of Li-7(+)-Li-7. The proposed method to utilize Rydberg molecules for ultracold ion-atom scattering, here particularized for the lithium ion-atom system, is readily applicable to other ion-atom systems as well. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2019
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