MICROWAVE SPECTRA OF ISOTOPIC SPECIES OF METHANOL

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1998

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Ohio State University

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Microwave spectrum of $CH_{3} ^{18}OH$ has been observed in frequency range between 8 and 200 GHz. Observed lines are those with $J \leq 39, -K-\leq 8$ for both the A and E species in the torsional ground state and some lines, mainly a-type transitions, in the torsional excited states for $\nu_{1}=1-3$. Total 568 lines have been fitted to 64 parameters in a reduced Hamiltonian with a root-mean square (RMS) of 0.262 MHz, where the A and E substates are treated simultaneously. Microwave spectrum of $CH_{3}OD$ has been observed in the frequency range between 7 and 200 GHz. These lines have been analyzed by using a reduced Hamiltonian.

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Author Institution: Department of Physics, Toyama University

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