6533b825fe1ef96bd1281cac
RESEARCH PRODUCT
The coupling of the X1Σ+and a3Σ+states of the atom pair Na + Cs and modelling cold collisions
O. DocenkoJ. ZaharovaRuvin FerberA. PashovM. TamanisHorst KnöckelEberhard Tiemannsubject
PhysicsScatteringUltracold atomQuantum stateAtomic physicsCondensed Matter PhysicsSpectroscopyDispersion (geology)Feshbach resonancePotential energyHyperfine structureAtomic and Molecular Physics and Opticsdescription
The states X1?+ and a3?+ correlated to the ground-state asymptote of Na (3s) and Cs (6s) atoms have been experimentally investigated using high resolution Fourier-transform spectroscopy. The hyperfine splitting of the a3?+ state levels is partially resolved. Transitions to asymptotic vibrational levels of the a3?+ and X1?+ states were recorded simultaneously. The joint evaluation of the data of both the a3?+ and the X1?+ states allows us to determine accurate potential energy curves of both electronic states. Coupled-channels calculations are finally applied for deriving long range dispersion parameters and the exchange contribution of the molecular potentials, yielding a reliable description of cold collisions between Na and Cs atoms in their two different hyperfine ground states. Scattering lengths and Feshbach resonances are predicted for selected quantum states.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-09-25 | Journal of Physics B: Atomic, Molecular and Optical Physics |