Fig. 11.21. Ratio of the peak intensities of the Ag(2) mode (1468 cm-1) in the electronic ground state to that in the triplet excited state as a function of the laser excitation intensity at T = 40 K (dots). The solid line shows the fit of an inverse square laser intensity dependence to the data. The inset shows the dependence of the frequency of the ground state 1468 cm-1
peak (open circles) and the cor-
responding triplet excited state mode (closed circles) on laser excitation intensity P [11.107],
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