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dc.creatorLackner, Florianen_US
dc.creatorKrois, Gunteren_US
dc.creatorKoch, Markusen_US
dc.creatorErnst, Wolfgang E.en_US
dc.date.accessioned2012-07-09T19:42:11Z
dc.date.available2012-07-09T19:42:11Z
dc.date.issued2012en_US
dc.identifier2012-FD-08en_US
dc.identifier.urihttp://hdl.handle.net/1811/52553
dc.descriptionAuthor Institution: Institute of Experimental Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austriaen_US
dc.description.abstractRubidium atoms on the surface of superfluid helium droplets have been excited into Rydberg states. The excitation spectrum of the Rb-He$_N$ system has been recorded from the 5$^2$D state manifold up to the ionization threshold by resonant three-photon-ionization time-of-flight spectroscopy. The observation of droplet size dependent shifts of excited states with respect to bare atom states is explained by a decreased quantum defect and a lowered ionization threshold. Within the scope of a Rydberg model we demonstrate that quantum defects and ionization thresholds are constant for each specific Rydberg series, which confirms the Rydberg character of excited Rubidium states on helium droplets. A set of six Rydberg series could be identified. Individual Rydberg states are observed with effective principle quantum numbers up to $n^{*} \approx 19$ and $l \leq 3$, for which the expectation value of the electron orbital radius is about ten times larger than the droplet radius. %.en_US
dc.language.isoenen_US
dc.publisherOhio State Universityen_US
dc.titleRUBIDIUM ATOMS ON HELIUM DROPLETS: ANALYSIS OF AN EXOTIC RYDBERG COMPLEXen_US
dc.typeArticleen_US


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