Abstract

Fluorescence decay of the rotationally cooled oxalylfluoride excited to the different single rotational levels of the à 1Au(81) state was measured as a function of an external magnetic field. On excitation to this level, the dynamics in both zero and nonzero fields may be described using the intermediate-molecule limit, with the fluorescence exhibiting biexponential decay. The fast component decay rate constant is the field-independent parameter, while that of the slow component depends on the magnetic field strength. The results obtained were explained by the indirect (electronic and nuclear-spin-decoupling) mechanism, proposed earlier.

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