Prediction luminescence intensity

Fig. 1 (left). In the BS fraction of inside-out thylakoids, comparison of the luminescence intensity, measured 1 ms after each flash of a series (B), with the predicted flash yields of proton release according to the stoichiometry 0,0,2,2 and 1,0,1,2 (C). The transition parameters are those obtained from the fitting of the oscillation pattern of fluorescence yield under the same conditions. The dark adaptation was 10 min, the flash interval 730 ms and 0.5 mM Fecy was added. 1 pM DBMIB was added in the luminescence experiments only. Experimental data are represented by dashes, theoretical data by dots. The best least squares fitting [8] yields a = 0.01, P = 0 and a progressive decrease of 8% of the number of centers after each flash (z= 0.92). The calculated concentrations of Sq,Sj,S2,S in the dark are in %, 36,51,7.5,5.5 assuming that the fluorescence oscillations arise from the S state. 

Early degradation s ate prediction and classification using total luminescence intensity measurements... 

Fig. 20. a 15 K upconversion luminescence of 2.5% Mo + Cs2NaYBr6. Inset Upconversion intensity as a function of (o) total NIR excitation power (4 pW mm max) and ( ) 9065 cm power for a fixed second-color power (E2 < 6060 cm ), normalized at low powers. The superimposed curves show the predicted two-photon (—) and one-photon (-) behavior norma-... 

In the region where the reciprocal approximation holds, Equation 7 also predicts that the intensity is independent of dose. It is found, however, that the intensity is proportional to dose. This dose dependence could arise in this kinetic scheme if the species causing luminescence are in non-overlapping clusters or spurs and an increase in dose simply results in a proportionate increase in the number of such clusters. However, this cluster model would imply that virtually all triplets must be formed in the clusters, and there is as yet no other evidence for this. 

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