Fig. 2: Resonant absorption and decay of solvated Ca2+.
From: The solvation shell probed by resonant intermolecular Coulombic decay
a X-ray absorption spectrum (XAS) at the Ca 2p edge of a 1.5 M CaCl2 solution. The spectrum is recorded in partial-electron-yield mode by integrating electron counts over the 270–350 eV range. IP ionization potential. b Resonant Ca 2p Auger and ICD spectra of the same solution. The two resonant spectra (red and blue traces) correspond to the excitation energies of the two main peaks of the panel (a) (red and blue arrows). The non-resonant Auger/ICD spectrum at 460 eV is also shown (black trace) for comparison. The most important attributions are made in the figure, with dashed black lines following the resonant features as they shift with photon energy. The spectra have been scaled and offset on the intensity scale to improve visibility.
