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We present experimental results on the rephasing of collisionless rotational coherence in jet-cooled trans-stitbene. The results represent the first observation of quantum coherence effects arising from the rotational level structure of molecules. We discuss the nature of the effect, its possible influence in time-resolved polarization experiments designed to probe intramolecular flow, and its possible uses as a new spectroscopic tool.
Felker et al. (Sat,) studied this question.