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Spatially resolved spectroscopy — mapping

3 The development of imaging spectroscopy 7.3.1 Spatially resolved spectroscopy - mapping [Pg.190]

A principal use of X-ray absorption spectrometers is in the measurement of X-ray absorption fine structure (XAFS) spectra, which provide quantitative information on the local structural and chemical environment within the region several angstroms around selected atomic species in a sample. Absorption and fluorescence spectroscopies are complementary, and both can be used for spatially resolved spectroscopic mapping of samples. Fluorescence spectrometers also have considerable applicability for determining elemental composition in astrophysical research, planetary sciences, and numerous other areas. [Pg.1275]

The color-coded nature of the PL in conjunction with Auger electron spectroscopy (AES)/depth profile analysis (which spatially resolves the alloys relative to the surface) permits mapping of the effective electric field (EEF) in the solid the term "effective electric field" reflects the idea that the field has contributions from, for example, band-edge and effective-mass gradients in addition to contributions from band bending (7). [Pg.400]

Confocal Raman microscopy, equipped with XYZ mapping to examine spatially resolved samples, is increasingly being used to assess the identity and content uniformity of solid state forms in low dose formulations. Solid state NMR spectroscopy, by virtue of its ability to detect specific nuclei with site selectivity, is also particularly well suited to characterizing component phases in bulk formulations. While in many cases the basic CP/MAS NMR technique is sufficiently sensitive and afibrds ample peak resolution for phase... [Pg.242]

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Mapping spatial

Spatially resolved spectroscopy

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