Abstract

A high resolution Zeeman microwave spectrometer employing a superconducing magnet, superheterodyne detection, and a microwave resonant cavity absorption cell was used to accurately measure the rotational magnetic moment and molecular magnetic susceptibility anisotropy of 16O 12C 32S. Δ M J = ±1 Zeeman transitions of the J = 1 → 2 rotational absorption line were studied, yielding the following results: g 1 = −0.028860 ± 0.000037, g 2 = −0.028870 ± 0.000037, Δ x = (−9.36 3 ± 0.01 6) × 10 −6 emu/mole. From these data the molecular quadrupole moment of 16O 12C 32S has been evaluated as O| = (−0.773 ± 0.023) × 10 −26 esu cm 2.

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