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Topic: Cathodoluminescence

Related Topics

Electroluminescence

Total internal reflection

Metamerism (color)

Synchrotron radiation

Optical phenomenon

Polarization

Thomson Scattering

Triboluminescence

Fluorescence

Dispersion (optics)

Double refraction

Chemical potential

Willard Gibbs

Rayleigh scattering

Anticrepuscular rays

	Cathodoluminescence - Wikipedia, the free encyclopedia
		Cathodoluminescence is an optical and electrical phenomenon whereby a beam of electrons is generated by an electron gun (e.g.
		Cathodoluminescence occurs because the impingement of a high energy electron beam onto a semiconductor will result in the promotion of electrons from the valence band into the conduction band, leaving behind a hole.
		In materials science and semiconductor engineering, cathodoluminescence will mostly be performed in either a scanning electron microscope or a scanning transmission electron microscope.
	en.wikipedia.org /wiki/Cathodoluminescence (518 words)

	CL Lab (Site not responding. Last check: 2007-10-09)
		Low-light cathodoluminescence photomicrograph images are captured with a thermoelectrically cooled color video camera and saved on a computer.
		These cathodoluminescence images are then transparently superimposed on a standard color video image of the sample being microdrilled on a 20 micron scale using a video mixer.
		CL petrography and microsampling are two essential tools in many types of sedimentary geochemistry studies, and new means are continually being sought to increase the efficiency, accuracy, and spatial resolution of these techniques.
	www.geology.uiuc.edu /~fouke/CLSystem.html (254 words)

	UCD Geology: GEL 281
		Cathodoluminescence (CL) spectroscopy is used in carbonate petrography to provide mineralogical information on thin sectioned rock material.
		Excitation of the solid material releases energy in the form of visible light, whose color and intensity may be used to identify different mineralogies.
		Cathodoluminescence is most commonly employed in petrographic diagenesis studies of carbonates to identify trace amounts of Fe and Mn Fe
	www-geology.ucdavis.edu /~GEL281/F04/techniques/cl.html (416 words)

	Cathodoluminescence Imaging--the Study of Yttrium Aluminates Distribution in Aluminum Nitride (Site not responding. Last check: 2007-10-09)
		Summary: Cathodoluminescence imaging is a technique which may combine a high-resolution spectroscopic method with a high-spatial resolution electron imaging technique to characterize chemical identity as well as physical size, shape, and spatial distribution of the materials which have cathodoluminescence.
		Cathodoluminescence imaging has been used to characterize yttrium aluminates in aluminum nitride ceramics.
		By digitally combining cathodoluminescence and backscattering electron images, it is possible not only to distinguish between different yttrium aluminates, but also to determine the size, shape, and spatial distribution of these phases.
	www.scanning-fams.org /scanabstracts/SCANNING95/17122.html (183 words)

	Cathodoluminescence (CL) and Fluorescence, Links for Mineralogists
		Cathodoluminescence is ideally suited to investigate the optical properties of simple and complex semiconductor structures spatially, spectrally and time-resolved.
		SLMS is an organization of professionals who use cathodoluminescence (CL) and UV fluorescence techniques in earth science research.
		The process is called cathodoluminescence (CL), and is the basis of a technique which is now widely used for the petrographic examination of geological and other materials.
	www.uni-wuerzburg.de /mineralogie/links/tools/cathodo.html (556 words)

	Dan Rich's Recent Publications (Site not responding. Last check: 2007-10-09)
		Rich, C. Zhang, I. Mukhametzhanov, and A. Madhukar, Cathodoluminescence wavelength imaging study of clustering in InAs/GaAs self-assembled quantum dots, Mater.
		Cathodoluminescence wavelength imaging study of clustering in InAs/GaAs self-assembled quantum dots, Mater.
		Cathodoluminescence study of the influence of misfit dislocations on hole accumulation in a n-AlGaAs/p-GaAs/n-InGaAs heterojunction phototransistor, Appl.
	www.usc.edu /dept/materials_science/faculty/rich-pub.htm (1107 words)

	Cathodoluminescence microscope (Site not responding. Last check: 2007-10-09)
		In this form, the samples are also ready for subsequent electron microprobe or SEM analysis after coating.
		Cathodoluminescence can provide a visual record of trace and minor element variations within minerals.
		Cathodoluminescence images may be collected using a 35 mm camera system or they may be collected by a high-resolution fl and white TV camera and transferred to the IBAS.
	www.umanitoba.ca /geoscience/labs/microbeam/catho.html (86 words)

	CALCULATION AND EXPERIMENTS OF THE CATHODOLUMINESCENCE INTENSITY AT p-GaAs (Site not responding. Last check: 2007-10-09)
		In this model of self-consistent calculation of the cathodoluminescence (CL) intensity, the sample p-GaAs is considered as two regions, depletion and neutral zone.
		The depletion region is assumed to be the result of the surface charge, which depends on the injection conditions (intensity Ip and energy Eo).
		Some material parameters, such as defect density Nt at the surface, energy level associated Et and diffusion length Ln are determined from the fitting of theoretical curves to experimental data.
	www.ucd.ac.ma /pcn/20r13.htm (191 words)

	CHREM: Cathodoluminescence (SEM-CL) (Site not responding. Last check: 2007-10-09)
		Cathodoluminescence is the light emission associated with the excitation of materials by an electron beam.
		The optics of a scanning electron microscope can be utilized to produce a focused beam and to excite a small region of the sample.
		Yacobi and D. Holt, Cathodoluminescence Microscopy of Inorganic Solids (Plenum, 1990).
	www.asu.edu /clas/csss/chrem/techniques/CL.html (361 words)

	Jahrbuch-CD der MPG 2003 - Cathodoluminescence of small si
		Cathodoluminescence of small silver particles on Al /NiAl (110)
		Cathodoluminescence experiments have been performed on silver clusters, which were grown on well characterized Al2O3 films supported on (110) NiAl crystals.
		Cluster size and shape were varied via Ag deposition at different temperatures and annealing the samples afterwards.
	www.mpg.de /forschungsergebnisse/wissVeroeffentlichungen/archivListenJahrbuch/2002/01/publZIM215.html (197 words)

	Photomosaics of the cathodoluminescence of 60 sections of meteorites and lunar samples
		Photomosaics of the cathodoluminescence of 60 sections of meteorites and lunar samples
		Cathodoluminescence (CL) petrography provides a means of observing petrographic and compositional properties of geological samples not readily observable by other techniques.
		(2004), Photomosaics of the cathodoluminescence of 60 sections of meteorites and lunar samples, J.
	www.agu.org /pubs/crossref/2004/2003JE002198.shtml (362 words)

	Cathodoluminescence Links (Site not responding. Last check: 2007-10-09)
		Cathodoluminescence images of cataclastic fault rock evolution from Dr. Geoffrey E. Lloyd at Leeds University (UK), a.k.a.
		Cathodoluminescence Investigation of the Evolution of Zircon Crystal Shapes Applied to Supplement Geochemical Studies
		Scanned Cathodoluminescence of Vein Quartz by Sarah Penniston-Dorland, The Johns Hopkins University.
	uts.cc.utexas.edu /~rmr/CLweb/links.html (172 words)

	Gatan, Inc: SEM Cathodoluminescence MonoCL3 (Site not responding. Last check: 2007-10-09)
		Gatan's MonoCL3 is a dedicated, "turn-key" cathodoluminescence (CL) system for high resolution imaging and spectroscopy suitable for all Scanning Electron Microscopes (SEMs), many microprobes and some Scanning TEMs.
		As the name suggests, it is a third generation product based on the principal of exceptional light collection and detection efficiency, but containing many new improvements, advanced options and software features ensuring ease of use.
		With the MonoCL3 platform, a wide range of detectors, monochromator gratings and system optics can be selected to extend the wavelength range or tailor the maximum sensitivity to the desired spectral regime.
	www.gatan.com /sem/monocl3.html (2336 words)

	APPLICATION OF SCANNING-CATHODOLUMINESCENCE IMAGING OF QUARTZ TO PROVENANCE ANALYSIS (Site not responding. Last check: 2007-10-09)
		Because it can be derived from a variety of primary (volcanic, plutonic, metamorphic) rocks, effective provenance analysis requires application of special techniques to link quartz to its source rocks.
		Previous techniques have included: (1) characterization of undulatory extinction and polycrystallinity (laborious, controversial), (2) trace-element analysis (requires use of an ion probe or other specialized equipment), (3) Fourier shape analysis (complicated by sediment transport and diagenesis), and (4) observation of cathodoluminescence color with a luminoscope (subjective; problems with resolution and color overlap).
		The recent development of cathodoluminescence (CL) detectors that can be attached to a scanning electron microscope (SEM) now makes possible acquisition of high-resolution, high-magnification grayscale CL images.
	gsa.confex.com /gsa/2003AM/finalprogram/abstract_57244.htm (388 words)

	Probing carrier dynamics in nanostructures by picosecond cathodoluminescence : Nature (Site not responding. Last check: 2007-10-09)
		However, spectroscopic information may also be acquired using pulses from an electron beam in a modern electron microscope, exploiting a phenomenon called cathodoluminescence.
		The multimode imaging capabilities of the electron microscope enable the correlation of optical properties (via cathodoluminescence) with surface morphology (secondary electron mode) at the nanometre scale
		The broad energy range of the electrons can excite wide-bandgap materials, such as diamond- or gallium-nitride-based structures that are not easily excited by conventional optical means.
	www.nature.com /nature/journal/v438/n7067/abs/nature04298.html (281 words)

	[No title]
		Asai, T., Toyoda, S., Komuro, K., Horikawa, Y., Isobe, H. Cathodoluminescence halos and ESR signals in quartz of uranium ore as possible dating method: examples and their formation processes in nature
		Cathodoluminescence: a new approach to the in situ study of martian regolith - exobiology and mineralogy
		Götte, Th., Neuser, R.D., Richter, D.K. New parameters for quartz in sandstone-petrography: Cathodoluminescence (CL)-investigation of mature sands and sandstones of northwestern Germany
	www.mineral.tu-freiberg.de /techmin/cl2001pro.htm (1352 words)

	Gatan, Inc: SEM Cathodoluminescence MiniCL (Site not responding. Last check: 2007-10-09)
		Cathodoluminescence imaging in the SEM (or microprobe) can be used to locate and characterise impurities, defects, grain boundaries, zonation and overgrowths in a wide range of materials.
		The novel design utilizes a minature, highly sensitive PMT mounted inside the SEM chamber at the end of a retractable probe.
		To request a PDF with the paper Advances in Cathodoluminescence Characterisation of Compound Semiconductors, click here and be sure to provide your complete email address.
	www.gatan.com /sem/minicl.html (137 words)

	289
		Hagni and M. Karakus, "Cathodoluminescence Microscopy: A Valuable Technique for Studying Ceramic Materials," MRS Bull., XIV(L 1), 54-59 (1989).
		Karakus et al., "Cathodoluminescence Mineralogy of Ceramic Build-ups in Channel Induction Furnaces"; pp.
		White, "Photoluminescence, Cathodoluminescence and Radical Recombination Luminescence of Materials"; pp.
	www.ceramicbulletin.org /references/289.html (347 words)

	Amazon.com: Cathodoluminescence in Geosciences: Books: M. Pagel,V. Barbin,P. Blanc,D. Ohnenstetter (Site not responding. Last check: 2007-10-09)
		This book presents an up-to-date overview of cathodoluminescence microscopy and spectroscopy in the field of geosciences.
		This volume includes new important data on cathodoluminescence spectroscopy, physical parameters and systematic spectral analysis of doped minerals.
		Presents a current overview of cathodoluminescence microscopy and spectroscopy in the field of geosciences.
	www.amazon.com /exec/obidos/tg/detail/-/3540659870?v=glance (502 words)

	Near-band-edge cathodoluminescence studies of AlN homoepitaxial films
		Home > Research > Publications > Near-band-edge cathodoluminescence studies of.
		Cathodoluminescence experiments were performed on high quality AlN epitaxial films grown by metal organic chemical vapor deposition on large single crystal AlN substrates.
		Measurements carried out at different temperatures allowed the identification of the lines, which were attributed to free and bound exciton recombination processes.
	www.parc.xerox.com /research/publications/details.php?id=5064 (108 words)

	Cosmochemistry Group - Cathodoluminescence Mosaics (Site not responding. Last check: 2007-10-09)
		Cathodoluminescence (CL) mosaics of meteorites and lunar samples provide information on both structure and mineral or phase composition.
		Bombardment of meteorite and lunar thin sections with electrons causes the sample to emit light in the visible region.
		Steele I. (1989) Mineralogy of meteorites revealed by cathodoluminescence.
	www.uark.edu /depts/cosmo/clmosaic.htm (192 words)

	Sam Boggs Home Page (Site not responding. Last check: 2007-10-09)
		My research group focuses on sedimentary petrology, particularly petrological and geochemical analysis of sandstones. We use a variety of techniques and equipment (e.g., electron probe microanalysis, backscattered electron microscopy, cathodoluminescence, image analysis) to study sediment provenance, dispersal, and diagenesis. Some recent projects include study of
		Identification of shocked quartz by scanning cathodoluminescence imaging: Meteoritics and Planetary Science, v.
		Provenance interpretation of Tertiary sandstones from the Cheju Basin (NE East China Sea): A comparison of scanning cathodoluminescence imaging and conventional petrographic techniques: Sedimentary Geology (in review), with Young-In Kwon.
	darkwing.uoregon.edu /~dogsci/boggs (357 words)

	Cathodoluminescence Microscopy of Inorganic Solids - SPI Supplies (Site not responding. Last check: 2007-10-09)
		Cathodoluminescence Microscopy of Inorganic Solids - SPI Supplies
		Outlines the applications of cathodoluminescence techniques in the assessment of optical and electronic properties of inorganic solids, such as semiconductors, phosphors, ceramics, and minerals.
		Some basic concepts of solid-state physics, as well as various cathodoluminescence techniques are described as well.
	www.2spi.com /catalog/books/book6.shtml (84 words)

	Research Facilities - Department of Geographical and Earth Sciences - University of Glasgow
		Amino Acid Analysis Atomic Absorption CartoGraphics Unit Cathodoluminescence Electron Microscopy Sample Preparation
		In cathodoluminescence the sample (which may be a polished thin section or thin rock slice) is placed in a vacuum chamber and a high-energy electron beam is directed at the surface.
		This causes many minerals to emit visible light, the colour of which is a guide to composition.
	www.ges.gla.ac.uk:443 /research/facilities/Cathodoluminescence (275 words)

	SORS National Museum of Natural History
		In addition to a capability for classical gravimetric analysis in the wet-chemistry laboratory, the instrumentation includes an electron microprobe and an analytical scanning electron microscope, X-ray diffraction and X-ray fluorescence facilities.
		Also available are an infrared spectrometer, CCD imaging and spectroscopy with a cathodoluminescence microscope, an atomic absorption spectrophotometer, and numerous optical microscopes.
		The Department has recently acquired a time-of-flight secondary ion mass spectrometer, which can analyze the elemental compositions of minerals on the nanoscale, and a microdiffractometer, which can non-destructively obtain an X-ray diffraction pattern from a small area on a polished sample.
	www.si.edu /ofg/Units/sorsnmnh.htm (14664 words)

	Assynt: Cathodoluminescence images of cataclastic fault rock evolution
		Assynt: Cathodoluminescence images of cataclastic fault rock evolution
		The cathodoluminescence (CL) photomicrographs (both optical microscope and SEM derived) shown below provide an alternative illustration to conventional polarised light microscopy of the classic cataclasite fault rock evolution in Cambrian Pipe Rock Quartzite (Skiag Bridge back thrust fault) via grain size reduction due to fracturing to produce a fine grain size fault rock.
		In particular, CL highlights intragranular microfractures and authigenic quartz precipitation (usually dark contrast).
	earth.leeds.ac.uk /assynt/skiagcl.htm (421 words)

	Cathodoluminescence characteristics of Archean volcanogenic massive sulfide related quartz: Noranda, Ben Nevis and ...
		Cathodoluminescence characteristics of Archean volcanogenic massive sulfide related quartz: Noranda, Ben Nevis and Matagami districts, Abitibi Subprovince, Canada
		Full Article (Nonsubscribers may purchase for $9.00, Includes print PDF,
		Citation: Ioannou, S. Götze, L. Weiershäuser, S. Zubowski, and E. Spooner (2004), Cathodoluminescence characteristics of Archean volcanogenic massive sulfide related quartz: Noranda, Ben Nevis and Matagami districts, Abitibi Subprovince, Canada, Geochem.
	www.agu.org /pubs/crossref/2004/2003GC000613.shtml (450 words)

	CHREM: JEOL JSM-6300 CL (Site not responding. Last check: 2007-10-09)
		The JEOL JSM-6300 Scanning Electron Microscope with an Oxford Instruments
		Cathodoluminescence detector is currently being installed and tested.
		The system diagram of this instrument can be seen below.
	www.asu.edu /clas/csss/chrem/facilities/jsm6300.html (58 words)

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