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In order to provide accurate rest frequencies for astronomical searches, the spectrum of perdeuterated methanol, CD 3 OD, has been measured in the frequency range 62-233GHz. A total of 379 lines was measured from rotational states up to J=20 and K=10 within the ground and first excited torsional states (v t =0 and 1). Using a one-dimensional torsion-rotation Hamiltonian, the lines...
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