Charged molecules and high-resolution electronic studies in helium nanodroplets

• Antragsteller: Professor Dr. Frank Stienkemeier
• Fachliche Zuordnung: Optik, Quantenoptik und Physik der Atome, Moleküle und Plasmen
• Förderung: Förderung von 2003 bis 2010
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 5407186

Alkali molecules and clusters are formed upon successive pick-up and agglomeration in helium nanodroplets at a temperature around 380 mK. Laser spectroscopy is applied to study pure and mixed clusters as well as clusters with adsorbates. In particular, absorption and resonant enhanced ionization properties of mixed alkali dimers (LiCs, RbCs) will be investigated to develop efficient detection schemes for such molecules isolated in traps. Furthermore, the formation of large spin-polarized alkali clusters and their binding and depolarization properties are examined probing electronic excitations and interactions with external magnetic fields. Finally, laser-induced fluorescence and accordingly beam depletion spectroscopy is applied to alkali clusters in order to study collective excitations (plasmon resonances) at very low temperatures.

• DFG-Verfahren: Schwerpunktprogramme
• Teilprojekt zu: SPP 1116: Wechselwirkung in ultrakalten Atom- und Molekülgasen
• Großgeräte: Nd:YLF-Laser
• Gerätegruppe: 5700 Festkörper-Laser