Pb L3 EXAFS and near-edge studies of lead metal and lead oxides

The Pb L3 extended X-ray absorption fine structure (EXAFS) spectra of polycrystalline foil and powder specimens of Pb metal; polycrystalline PbO2, and both red and yellow allotropes of PbO have been recorded. Although the EXAFS oscillations in the spectrum of Pb metal are rapidly damped with increasing temperature, they are easily detected, contrary to recent suggestions (Samant et al., J. Am. chem. Soc. 109, 5970, 1987) that the large thermal …