Hannover 2010 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 14: Atomic Clusters II

A 14.2: Hauptvortrag

Mittwoch, 10. März 2010, 17:00–17:30, F 303

CRASY: Correlated Rotational Alignment Spectroscopy — •Thomas Schultz — Max Born Institut Berlin, Max Born Str. 2A, 12489 Berlin

The field of multidimensional nuclear magnetic resonance spectroscopy can teach us how to correlate the information of multiple measurements, thereby multipliying the information content of specific measurements. In optical spectroscopy, such experiments are rare. Here we demonstrate such an experiment with the correlation of rotational and electronic structure through the combination of nonadiabatic alignment techniques and femtosecond pump-probe ionization spectroscopy. The resulting mass resolved rotational spectra (mass-CRASY) allows the assignment of rotational spectra for rare natural isotopes and the state-selective investigation of fragmentation channels. The correlation of photoelectron spectroscopy with rotational structure (electron CRASY) can resolve electronic structure in an isomer selective fashion. We present first data and discuss how the combination of CRASY with (almost) all types of optical spectroscopy will transform the field of gas phase spectroscopy.