Rotational constants mismatches

The effect of rotational constant mismatches on vibrational quantum beats43 is the subject of this subsection. We first review theoretical results that show that the qualitative effect of such mismatches is to increase the apparent damping rate of quantum beat envelopes relative to the decay rate of the unmodulated portion of a decay and that such beat damping rates increase with increasing rotational temperature. We then review results that show that such effects on beat damping are consistent with experiment. 

Effects of Rotations on Anharmonic Coupling Mismatches of Rotational Constants... 

The underpotential deposition of T1 on Cu(l 11) has been examined by Shannon et al. [133] under static conditions, and Richmond and Robinson in the time domain [117]. A large mismatch between the copper and the thallium lattice constants makes it an interesting case for comparison with the Tl/Ag(lll) SH study described above [122] where the lattice constants are more closely matched and the overlayer has been shown to form in an ordered manner. From strictly geometrical considerations, the silver lattice is able to accommodate a thallium overlayer without buckling. On the copper substrate, a close-packed thallium overlayer must be either buckled or rotated with respect to the substrate lattice. 

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