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Figure 2
Anomalous dispersion of phosphorus from phospholipids of purple membrane at energies near the K-edge. The red curve denotes the imaginary part f′′ of the atomic scattering factor (in anomalous electron units). The real resonant part f′ (in blue) is negative, except at 2154 eV (5.755 Å), where it is close to zero. The large circles denote the energies used in anomalous diffraction from purple membrane. The absorption edge of elementary phosphorus is at 2144 eV (5.782 Å) (black line) (Biou et al., 2005BB6).

ISSN: 2053-2733
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