White lines in x-ray absorption

TiSi2Ox Coated N-Doped Carbon Nanotubes as Pt Catalyst Support for the Oxygen Reduction Reaction in PEMFCs

“…The WL in Pt L 2 and L 3 edges arises from the dominant 2p 1/2 and 2p 3/2 transition to 5d 3/2 and 5d 5/2,3/2 , resectively (dipole selection rule: Δl = ±1, Δj = ±1, 0), indicating the presence of unoccupied densities of states of Pt 5d 5/2 and 5d 3/2 character in the samples. 57,58 The catalytic activity of Pt for various electrochemical reactions including ORR has been related to the density of states of employed Pt. 59,60 Furthermore, the interaction between the catalyst support and catalyst has been evaluated through study of the XANES spectrum.…”

Valence of manganese, in a new oxybromide compound, determined by means of electron energy loss spectroscopy

“…It is established for a long time that, as in XPS, the energy position of ionisation edges for an element strongly depends on its valence state [2][3][4]. In the case of transition metals, the relative intensities of the L3 and L2 white lines (2p3/2 ~ 3d3/2 3d5/2, 2p1/2 ~ 3d3/2) are highly sensitive to the 3d occupancy [2][3][4][5][6][7].…”

“…In the case of transition metals, the relative intensities of the L3 and L2 white lines (2p3/2 ~ 3d3/2 3d5/2, 2p1/2 ~ 3d3/2) are highly sensitive to the 3d occupancy [2][3][4][5][6][7].…”

Polarization-dependence of anomalous scattering in brominated DNA and RNA molecules, and importance of crystal orientation in single- and multiple-wavelength anomalous diffraction phasing

“…The white lines in the X-ray absorption spectra of simple solids have been qualitatively explained as being due to electronic transitions into a high density of final states (Brown et al, 1977). For example, at the K-absorption edge, a 1s electron makes a transition into empty final states of 'p' symmetry, as dictated by the dipole selection rules (Ál = AE1).…”