Figure 3

R-factor map as a function of parameters ΔEa and ΔRI-I (a) and relevant I 2p XPD profiles (b).
In (a), a valley located in region A and a hill in region B. In (b), simulated XPD profiles at the minimum value of the R-factor in region A and at the maximum in region B are shown by red and blue curves, respectively. The experimental data are represented by the short bars, which are the same as those in Fig. 2(b).