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Interaction Potential for NaCs for Ultracold Scattering and Spectroscopy [dataset] Open Access

We obtain the interaction potential for NaCs by fitting to experiments on ultracold scattering and spectroscopy in optical tweezers. The central region of the potential has been accurately determined from Fourier transform spectroscopy at higher temperatures, so we focus on adjusting the long-range and short-range parts. We use coupled-channel calculations of binding energies and wave functions to understand the nature of the molecular states observed in ultracold spectroscopy and of the state that causes the Feshbach resonance used to create ultracold NaCs molecules. We elucidate the relationships between the experimental quantities and features of the interaction potential. We establish the combinations of experimental quantities that determine particular features of the potential. We find that the long-range dispersion coefficient C6 must be increased by about 0.9% to 3256(1)E_h a_0^6 to fit the experimental results. We use coupled-channel calculations on the final potential to predict bound-state energies and resonance positions.

Descriptions

Resource type

Dataset

Contributors

Creator: Brookes, Samuel ¹
Creator: Hutson, Jeremy ¹

¹ Durham University, UK

Funder

U.K. Engineering and Physical Sciences Research Council (EPSRC)

Research methods

Other description

Keyword

NaCs
Ultracold scattering

Subject

Location

Language

Cited in

doi:10.1021/acs.jpca.2c01810

Identifier

ark:/32150/r13r074t95q
doi:10.15128/r13r074t95q

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

S.G.H. Brookes

Date Uploaded

14 June 2022, 17:06:11

Date Modified

15 June 2022, 11:06:27

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Characterization

File format: zip (ZIP Format)

Mime type: application/zip

File size: 1884427

Last modified: 2022:06:14 18:53:23+01:00

Filename: data_repository_nacs.zip

Original checksum: 489d686b3f1161d284663b262fb9015d