Mainz 2017 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 31: Poster Session III
A 31.31: Poster
Donnerstag, 9. März 2017, 17:00–19:00, P OG1
P-state Rydberg molecules — •Tanita Eichert1, Thomas Niederprüm1, Oliver Thomas1,2, Carsten Lippe1, Indujan Sivanesarajah1, and Herwig Ott1 — 1Department of Physics and research center OPTIMAS, University of Kaiserslautern, Germany — 2Graduate School Materials Science in Mainz, Gottlieb-Daimler-Strasse 47, 67663 Kaiserslautern, Germany
Our poster addresses the experimental investigation of P-state Rydberg molecules. The scattering interaction of the highly excited electron of a Rydberg atom and a ground state atom causes an oscillatory potential that supports molecular bound states. In our experiment we use high resolution time-of-flight spectroscopy over a range of several 10 GHz to precisely determine the binding energies and lifetimes of molecular states in the vicinity of the 25P-state. We observe molecular states, which induce a spin-flip of the perturber atom due to the mixing of the atom's hyperfine states by the molecular interaction. We also resolve molecular states, which feature strong entanglement between the orbital angular momentum of the Rydberg electron and the nuclear spin of the ground state atom. The so called butterfly molecules arise in rubidium due to a shape resonance in the p-wave electron-atom scattering. We find states bound up to -50 GHz, corresponding to binding lengths of 100 to 350 Bohr radii and with permanent electric dipole moments of around 500 Debye.