15min:

GUIQIU ZHANG, DEPARTMENT OF CHEMISTRY, SHANDONG TEACHER'S UNIVERSITY, PEOPLE'S REPUBLIC OF CHINA; JUN-MEI CHAO AND YEN-CHU HSU, INSTITUTE OF ATOMIC AND MOLECULAR SCIENCES, ACADEMIA SINICA, P.O. BOX 23-166, TAIPEI 107, TAIWAN, R. O. C. AND DEPARTMENT OF CHEMISTRY,NATIONAL TAIWAN UNIVERSITY, TAIPEI 107, TAIWAN, R. O. C..

A preliminary report of our rotational analysis of the A-X system of C₃-Ne and C₃-Ar van der Waals (vdW) complexes will be given. The complexes were generated from 193-nm photolysis of a gas mixture containing allene and rare-gas atom under supersonic molecular beam condition. The laser-induced fluorescence spectra near the C₃, Ã-X, 2₀^2-K₀¹ band were recorded with a resolution of 0.03cm^-1. Both a- and c-type transitions were observed. The rotational constants and geometry of these vdW complexes will be presented.