Download Application of Cathodoluminescence Imaging to the Study of by Sam Boggs Jr, David Krinsley PDF

By Sam Boggs Jr, David Krinsley

Minerals in sedimentary rocks emit attribute seen luminescence referred to as cathodoluminescence (CL) while bombarded via excessive strength electrons. CL emissions will be displayed as color photographs in a cathodoluminescence microscope or as high-resolution monochromatic photos in a scanning electron microscope. this gives details now not on hand by way of different innovations at the provenance of the mineral grains in sedimentary rocks, and insights into diagenetic adjustments. The publication, first released in 2006, starts off with an simply understood presentation of the elemental rules of CL imaging. this is often through an outline and dialogue of the tools utilized in CL imaging, and a close account of its purposes to the research of sedimentary rocks. the amount is a accomplished, simply understood description of the purposes of cathodoluminescence imaging to the examine of sedimentary rocks. will probably be a tremendous source for tutorial researchers, pros and complicated graduate scholars in sedimentary geology.

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Application of Cathodoluminescence Imaging to the Study of Sedimentary Rocks

Minerals in sedimentary rocks emit attribute obvious luminescence referred to as cathodoluminescence (CL) whilst bombarded by means of excessive power electrons. CL emissions could be displayed as color photographs in a cathodoluminescence microscope or as high-resolution monochromatic pictures in a scanning electron microscope.

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1990) for additional discussion of the advantages and disadvantages of SIMS. Secondary-ion mass spectrometry has been used extensively in commercial applications that involve study of thin surface films in metals, semiconductors, oxides, ceramics, biomolecules, polymers, etc. , MacRae, 1995). Secondary-ion mass spectrometry and TOF-SIMS have been used to study a wide range of geologic problems, including: study of rare-earth elements in silicate minerals; analysis of zircons for U–Pb chronology; trace-element studies of marine biomineralization; determining the concentration of light elements such as Li, Be, and B in silicates; analysis of the chemical structure in coal macerals; evaluation of the boron composition of subduction-zone metamorphic rocks; identification of mineral phases on basalt surfaces; detection of radionuclides in particles from soil samples; analysis of oxygen isotopes and matrix effects in complex minerals and glasses; study of chemical weathering surfaces; Other microcharacterization techniques 41 study of oxygen isotope composition of diagenetic quartz overgrowths; analysis of fluid inclusions in minerals; and evaluation of many other geologic problems.

It 31 Cathodoluminescence imaging Optic axis EL beam path X-ray emission Cathodoluminescence Microscope S ED ray or X ect t de Lead glass Deflection magnet Luminoscope Full opening door Sample tray Sample Lead glass Electron gun Transmitted light source Fig. 6. Arrangement of the EDS detector on the Luminoscope. (After Marshall, 1991. Combined cathodoluminescence and energy dispersive spectroscopy. In Barker, C. E. and O. C. , Luminescence Microscopy: Quantitative and Qualitative Aspects, SEPM Short Course 25, Fig.

Russ, 1984). This process is referred to as energy-dispersive X-ray spectroscopy (EDS). EDS with a cathodoluminescence microscope Characteristic X-rays can be collected with a suitable detector attached to a cathodoluminescence microscope and displayed as an EDS spectrum, that is, a plot of X-ray energy versus intensity. One of the earliest EDS detectors designed for a CL miscroscope was that of Marshall et al. (1988); see also Marshall (1991). 7. Because each element generates X-rays with a characteristic energy, each peak in an EDS spectrum identifies a particular element.

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