Peaks multiple overlapping

Due to the complexity of the pattern, multiple overlaps (e.g. about 90 Bragg reflections are possible in the range of the first 40 observed peaks below 20 = 40°) and the relatively broad peaks, the pattern decomposition was carried out using a semi-manual profile fitting. For each group of Bragg reflections, located within the manually selected ranges of the powder... 

For PD, the fact that this condition, represented in Figure 13.1, holds for all equivalent points laying on the diffraction, or Ewald, sphere (Chapter 1), leads to the concept of peak multiplicity and systematic overlap. 

Tools such as XRD and IR spectroscopy are useful when the rock contains only one or two minerals, but both IR and XRD spectra become too complex, with multiple overlapping peaks, when there are more than a few minerals. Thus these tools are mainly used for identifying the major mineral components. 

Fig. 2.7.6 Left A representation of a Schlum- that dearly separate and correspond to the berger NMR well-logging tool [56], The long oil and water signals, respectively. The lower cylinder is the tool body and the shaded areas peak corresponds to the oil phase, the higher contain permanent magnets. The multiple peak corresponds to the water phase. Note that sensitivity regions are shown as the colored the T2 distribution of the oil and water peaks sheets that are outside the tool body. Right overlap significantly. From the map, a water...

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