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Original version
Weyssenhoff, H.V.; Selzle, H.L.; Schlag, E.W.: Laser-Desorbed Large Molecules in a Supersonic Jet. In: Zeitschrift für Naturforschung - Section A Journal of Physical Sciences 40 (1985), Nr. 7, S. 674-676. DOI: https://doi.org/10.1515/zna-1985-0703
A new technique of desorption of non volatile thermally unstable molecules into a supersonic jet has been developped. With this method isolated large molecules are now available for mass spectrometry as well as for spectroscopic studies at temperatures of a few Kelvin, thus avoiding spectral congestion. It could be demonstrated that molecules like tryptophane and retinal could be desorbed with an IR laser pulse without decomposition and be ionized with a second UV laser to form bare molecule ions without fragmentation.