Figure 2
X-ray absorption spectrum measured at the Fe K-edge of the iron protein from Klebsiella pneumoniae nitrogenase (unpublished data). The different regions of the XAS spectrum are indicated in (a). The EXAFS obtained after background subtraction and normalization is shown in (b). The EXAFS spectrum is normally plotted in k-space in Å−1, so that the Fourier transform (c) gives the radial distribution in Å corresponding to the distances of the backscattering atoms from the metal. |