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The asymmetric frequency shifts in the Zeeman splittings of the first rotational lines of CO and CS have been measured. The magnetic anisotropy evaluated from these shifts is ( − 8.2 ± 0.9) × 10−6 for CO and ( − 24 ± 3) × 10−6 for CS, both in ergs/gauss2·mole. The molecular quadrupole moments are estimated from the anisotropies, and the g factor of CS is shown to be negative.
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Gustafson et al. (1970) studied this question.
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