Actions

Download Analytics Citations

Export to: EndNote  |  Zotero  |  Mendeley

Collections

This file is not currently in any collections.

Molecule-molecule and atom-molecule collisions with ultracold RbCs molecules [dataset] Open Access

Understanding ultracold collisions involving molecules is of fundamental importance for current experiments, where inelastic collisions typically limit the lifetime of molecular ensembles in optical traps. Here we present a broad study of optically trapped ultracold RbCs molecules in collisions with one another, in reactive collisions with Rb atoms, and in nonreactive collisions with Cs atoms. For experiments with RbCs alone, we show that by modulating the intensity of the optical trap, such that the molecules spend 75% of each modulation cycle in the dark, we partially suppress collisional loss of the molecules. This is evidence for optical excitation of molecule pairs mediated via sticky collisions. We find that the suppression is less effective for molecules not prepared in the spin-stretched hyperfine ground state. This may be due either to longer lifetimes for complexes or to laser-free decay pathways. For atom–molecule mixtures, RbCs + Rb and RbCs + Cs, we demonstrate that the rate of collisional loss of molecules scales linearly with the density of atoms. This indicates that, in both cases, the loss of molecules is rate-limited by two-body atom–molecule processes. For both mixtures, we measure loss rates that are below the thermally averaged universal limit.

Descriptions

Resource type

Dataset

Contributors

Creator: Gregory, Philip ¹
Contact person: Gregory, Philip ¹
Creator: Blackmore, Jacob A. ¹
Creator: Frye, Matthew David ¹
Creator: Fernley, Luke M. ¹
Creator: Bromley, Sarah L. ²
Creator: Hutson, Jeremy M. ¹
Creator: Cornish, S. L. ¹

¹ Durham University, UK
² JILA, Boulder, Colorado, USA

Funder

Engineering and Physical Sciences Research Council

Research methods

Other description

Keyword

Ultracold RbCs molecules

Subject

Location

Language

Cited in

doi:10.1088/1367-2630/ac3c63

Identifier

ark:/32150/r1zs25x850j
doi:10.15128/r1zs25x850j

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

P.D. Gregory

Date Uploaded

14 September 2021, 15:09:39

Date Modified

6 December 2021, 12:12:40

Audit Status

Audits have not yet been run on this file.

Characterization

File format: zip (ZIP Format)

Mime type: application/zip

File size: 4195

Last modified: 2021:09:14 16:11:43+01:00

Filename: Data - Molecule-molecule and atom-molecule collisions with ultracold RbCs molecules.zip

Original checksum: 50741bde8e3aaed257f9f2d9ef9b22b1