Figure 8
Transient spectra of the S3 → S0 transition. Spectra (symbols and thin lines) have been obtained from fluorescence changes induced by flash 3 measured at a time resolution of 200 µs per point (see Fig. 7). At each energy point, up to 35 time scans measured in an interval of ±1 eV around the indicated mean energy have been averaged. The shown sampling-XANES spectra were obtained within 500 µs before the flash and within six intervals of 500 µs length, the first one starting immediately after the flash and the last one extending up to 3 ms (arrow). The strong lines represent sampling-XANES spectra obtained within 400 ms after two flashes (predominant S3 population) and three flashes (predominant S0 population), respectively. |