Cathodoluminescence hyperspectral imaging in geoscience

Edwards, Paul R. and Lee, Martin R.; Coulson, Ian M., ed. (2014) Cathodoluminescence hyperspectral imaging in geoscience. In: Cathodoluminescence and its Application to Geoscience. Short Course Series . Mineralogical Association of Canada, CAN, pp. 29-45. ISBN 9780921294559

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Cathodoluminescence (CL) is the electron-stimulated emission of low-energy (IR/visible/UV) photons from a solid material. Electron irradiation raises sample electrons to an excited state, which then emit a photon as they return to a lower energy state. The resultant luminescence can be analysed both spatially and spectrally, and until recently only one of these two approaches could be used for a given measurement. This chapter outlines the conventional spatial and spectral techniques, then describes the more recent approach of hyperspectral imaging, in which a single CL dataset simultaneously contains both spatial and spectral information.