Mass scaling in photoassociation of spin-singlet atoms

[摘要] Photoassociation spectroscopy, based on forming of molecules from colliding atoms in the presence of light, is a priceless tool for the study of atomic interactions. It enables direct measurements of bound state energies, both in excited and ground state molecules. Applications include determinations of s-wave scattering lengths, as well as atomic state lifetimes. In this work we present the results of our research on the mass-scaling behaviour of molecular bound state energies and collisional properties in spin-singlet atoms. We will concentrate on two such species: strontium and ytterbium, both of which offer several stable isotopes, enabling mass tuning of the system's properties.

[发布机构] Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Grudziadzka 5, Torun; 87-100, Poland^1;Joint Quantum Institute, University of Maryland, National Institute of Standards and Technology, College Park; MD; 20742, United States^2;Institut für Experimentalphysik, Heinrich-Heine-Universität Düsseldorf, Universitätstraße 1, Düsseldorf; 40225, Germany^3;Rice University, Department of Physics and Astronomy, Houston; TX; 77251, United States^4;Department of Physics, Graduate School of Science, Kyoto University, Kyoto; 606-8502, Japan^5

[关键词] Atomic interactions;Bound-state energies;Collisional properties;Direct measurement;Ground-state molecules;Photoassociation;Photoassociation spectroscopy;S-wave scattering lengths