Experimental Characterization of Singlet Scattering Channels in Long-Range Rydberg Molecules. Saßmannshausen, H., Merkt, F., & Deiglmayr, J. Physical Review Letters, 114(13):133201, 2015. ![Experimental Characterization of Singlet Scattering Channels in Long-Range Rydberg Molecules [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex We observe the formation of long-range Cs2 Rydberg molecules consisting of a Rydberg and a ground-state atom by photoassociation spectroscopy in an ultracold Cs gas near 6s1/2(F=3,4)→np3/2 resonances (n=26–34). The spectra reveal two types of molecular states recently predicted by D. A. Anderson, S. A. Miller, and G. Raithel [Phys. Rev. A 90, 062518 (2014)]: states bound purely by triplet s-wave scattering with binding energies ranging from 400 MHz at n=26 to 80 MHz at n=34, and states bound by mixed singlet-triplet s-wave scattering with smaller and F-dependent binding energies. The experimental observations are accounted for by an effective Hamiltonian including s-wave scattering pseudopotentials, the hyperfine interaction of the ground-state atom, and the spin-orbit interaction of the Rydberg atom. The analysis enables the characterization of the role of singlet scattering in the formation of long-range Rydberg molecules and the determination of an effective singlet s-wave scattering length for low-energy-electron–Cs collisions.
@article{sasmannshausen_experimental_2015,
title = {Experimental {Characterization} of {Singlet} {Scattering} {Channels} in {Long}-{Range} {Rydberg} {Molecules}},
volume = {114},
url = {http://link.aps.org/doi/10.1103/PhysRevLett.114.133201},
doi = {10.1103/PhysRevLett.114.133201},
abstract = {We observe the formation of long-range Cs2 Rydberg molecules consisting of a Rydberg and a ground-state atom by photoassociation spectroscopy in an ultracold Cs gas near 6s1/2(F=3,4)→np3/2 resonances (n=26–34). The spectra reveal two types of molecular states recently predicted by D. A. Anderson, S. A. Miller, and G. Raithel [Phys. Rev. A 90, 062518 (2014)]: states bound purely by triplet s-wave scattering with binding energies ranging from 400 MHz at n=26 to 80 MHz at n=34, and states bound by mixed singlet-triplet s-wave scattering with smaller and F-dependent binding energies. The experimental observations are accounted for by an effective Hamiltonian including s-wave scattering pseudopotentials, the hyperfine interaction of the ground-state atom, and the spin-orbit interaction of the Rydberg atom. The analysis enables the characterization of the role of singlet scattering in the formation of long-range Rydberg molecules and the determination of an effective singlet s-wave scattering length for low-energy-electron–Cs collisions.},
number = {13},
urldate = {2015-04-03},
journal = {Physical Review Letters},
author = {Saßmannshausen, Heiner and Merkt, Frédéric and Deiglmayr, Johannes},
year = {2015},
keywords = {Ultracold Rydberg gases},
pages = {133201},
}
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