LASER SPECTROSCOPY OF THE TETRACENE-ARGON VAN DER WAALS COMPLEXES
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Date
1984
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Publisher
Ohio State University
Abstract
Van der Waals complexes of tetracene (T) with argon were formed in a supersonic expansion through a nozzle $(150 \mu m)$. The strongly collimated molecular beam was crossed with a single frequency dye laser operating in the region 430 to 450 nm. Spectra were obtained by the technique of laser induced fluorescence. The Doppler linewidths were reduced to 15 MHz (FWHM) yielding rotationally resolved spectra for tetracene and $T-Ar_{n}$ for $n = 1$ and 2. The structure of the latter two complexes has been deduced. $T-Ar_{n}$ complexes for n is up to 6 were observed with increasing linewidths. For $n \geqq 3$ the linewidth was too large to observe any rotational structure.
Description
Author Institution: Fysisch Laboratorium, Katholieke Universiteit; Herzberg Institute of Astrophysics, National Research Council of Canada