15min:

JUN-MEI CHAO, GUIQIU ZHANG AND YEN-CHU HSU, INSTITUTE OF ATOMIC AND MOLECULAR SCIENCES, ACADEMIA SINICA, P. O. BOX 23-166, TAIPEI 107, TAIWAN, R. O. C..

The C₃-Ne and C₃-Xe van der Waals (vdW) complexes were produced from 193-nm photolysis of an allene-rare gas atom gas mixture under supersonic expansion. The C₃-bending vibrational levels (v _b=2-10) of the ground electronic states of these two complexes have been obtained from the wavelength-resolved emission from vdW levels observed near the C₃, Ã-X, 2₀^2-K₀¹, 2₀^4-K₀¹, 2₀²⁺K₀¹, and 1₀¹K₀¹ bands. A "free rotor" model was used to fit the observed C₃-bending vibrational levels to parameters of dipole-induced dipole interaction of these complexes. Comparison of level structure observed among four C₃-Rg complexes will be presented.