The second laser excitation to the Ryderg states requires wavelengths in the range of 550-600 nm.įluorescence is monitored on the 828 nm transition from the 6p intermediate state to a 6s state. ![]() The 2-photon excitation requires laser wavelengths of about 250 nm. ![]() The result shows how the energy levels change at low electric fields and then intermix completely at higher fields.Įxcitation scheme used to experimentally probe the nd Rydberg states of xenon. Funding comes from the NWO/STW funding bodies in the Netherlands.ĭependence of particular Xe energy levels on electric field, as determined by a quantum mechanical calculation based on perturbation theory. On addition, we use a theoretical calculation of Stark effects in noble gases to predict the effects of electric fields on high-lying Rydberg states of these atoms.Įxperiments are performed at Eindhoven University of Technology, Netherlands.Ĭollaborative partners include Erik Wagenaars, Tao Jiang, and Gerrit Kroesen at Eindhoven University of Technology. We use laser induced fluorescence and laser optogalvanic spectroscopy to detect Stark effects in the atomic species. The study focuses on Stark spectroscopy of noble gases such as argon, krypton and particularly xenon. The aim of this project is to develop laser-based methods of measuring electrics fields that can be applied in studies of low-pressure plasmas.
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