ROTATIONAL ANALYSIS OF THE $C_2 - X_2+(0,0)$ SYSTEM OF CaF
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Date
1990
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Ohio State University
Abstract
The $C^{2}\Pi - X^{2}\Sigma^{+}(0,0)$ system of CaF around 331 nm was investigated using Doppler-free laser spectroscopy. By applying UV light from a single mode ring dye laser with intracavity fequency doubling to a molecular beam of CaF, rotational spectra could be recorded between 30190 and $30232 cm^{-1}$ at 30 MHz linewidth. Two perturbations as well as the observation of additional unassigned lines indicate the presence of another electronic state close to the C state. About 200 lines of the C-X system were assigned and rotationally analyzed. The main constants for the $C^{2}\Pi$ state of CaF are $T_{o} = 30215.962(16) cm^{-1}, A_{o} = 29.256(30) cm^{-1}, B_{o} = 0.32341(7)cm^{-1}, p_{o} = - 0.487(30)10-2 cm^{-1}$, and $q_{o} = 0.105(2) 10^{-3} cm^{-1}$ (standard error in parentheses).
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Author Institution: Department of Physics, Penn State University; Institut fur Molekulphysik, Freie Universitat Berlin; VDI Technologiezentrum, Graf-Recke-Str.,