Formation of van der Waals Tryptophan Clusters in Seeded Beam Expansion
Tatsuo Arikawa, Hisayuki YAZAWA
Stable van der Waals clusters of tryptophan molecules, (Trp) n , of up to n=5, were produced in a seeded supersonic beam expansion from a laser desorption nozzle source. Translational beam temperatures of van der Waals tryptophan clusters were measured using a fast optical imaging device. Estimated beam temperatures in carrier argon gas were 27 K for tryptophan dimers (n=2) and 41 K for tryptophan trimers (n=3). A preliminary experiment showed that no significant difference was observed in the yield of van der Waals clusters for L-, D- and racemic-tryptophan molecules.
Japanese Journal of Applied Physics•Apr 1, 1996•1 citation