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- Cathodoluminescence_microscope abstract "A cathodoluminescence (CL) microscope combines methods from electron and regular (light optical) microscopes. It is designed to study the luminescence characteristics of polished thin sections of solids irradiated by an electron beam.Using a cathodoluminescence microscope, structures within crystals or fabrics can be made visible which cannot be seen in normal light conditions. Thus, for example, valuable information on the growth of minerals can be obtained. CL-microscopy is used in geology, mineralogy and materials science (rocks, minerals, volcanic ash, glass, ceramic, concrete, fly ash, etc.).CL color and intensity are dependent on the characteristics of the sample and on the working conditions of the electron gun. Here, acceleration voltage and beam current of the electron beam are of major importance. Today, two types of CL microscopes are in use. One is working with a \"cold cathode\" generating an electron beam by a corona discharge tube, the other one produces a beam using a \"hot cathode\". Cold-cathode CL microscopes are the simplest and most economic type. Unlike other electron bombardment techniques like electron microscopy, cold cathodoluminecence microscopy provides positive ions along with the electrons which neutralize surface charge buildup and eliminate the need for conductive coatings to be applied to the specimens. The \"hot cathode\" type generates an electron beam by an electron gun with tungsten filament. The advantage of a hot cathode is the precisely controllable high beam intensity allowing to stimulate the emission of light even on weakly luminescing materials (e.g. quartz – see picture). To prevent charging of the sample, the surface must be coated with a conductive layer of gold or carbon. This is usually done by a sputter deposition device or a carbon coater.CL systems can also be attached to a scanning electron microscope. These devices are expensive and are traditionally used for special applications like e.g. investigations in materials sciences or quality determination of ceramics. The most prominent advantage is their higher magnifications. However, CL colour information can only be obtained by a spectroscopic analysis of the Luminescence emission.Direct viewing of emission colors is only provided by optical CL microscopes, both \"cold\" and \"hot\" cathode types.".
- Cathodoluminescence_microscope thumbnail Hydr-Qz-tb.jpg?width=300.
- Cathodoluminescence_microscope wikiPageExternalLink scientists-shed-light-on-glowing-materials.
- Cathodoluminescence_microscope wikiPageID "787945".
- Cathodoluminescence_microscope wikiPageLength "3937".
- Cathodoluminescence_microscope wikiPageOutDegree "33".
- Cathodoluminescence_microscope wikiPageRevisionID "708225609".
- Cathodoluminescence_microscope wikiPageWikiLink Acceleration_voltage.
- Cathodoluminescence_microscope wikiPageWikiLink Carbon.
- Cathodoluminescence_microscope wikiPageWikiLink Category:Microscopes.
- Cathodoluminescence_microscope wikiPageWikiLink Cathode_ray.
- Cathodoluminescence_microscope wikiPageWikiLink Cathodoluminescence.
- Cathodoluminescence_microscope wikiPageWikiLink Ceramic.
- Cathodoluminescence_microscope wikiPageWikiLink Cold_cathode.
- Cathodoluminescence_microscope wikiPageWikiLink Concrete.
- Cathodoluminescence_microscope wikiPageWikiLink Corona_discharge.
- Cathodoluminescence_microscope wikiPageWikiLink Crystal.
- Cathodoluminescence_microscope wikiPageWikiLink Electron_gun.
- Cathodoluminescence_microscope wikiPageWikiLink Electron_microscope.
- Cathodoluminescence_microscope wikiPageWikiLink Fly_ash.
- Cathodoluminescence_microscope wikiPageWikiLink Geology.
- Cathodoluminescence_microscope wikiPageWikiLink Glass.
- Cathodoluminescence_microscope wikiPageWikiLink Gold.
- Cathodoluminescence_microscope wikiPageWikiLink Hot_cathode.
- Cathodoluminescence_microscope wikiPageWikiLink Local_density_of_states.
- Cathodoluminescence_microscope wikiPageWikiLink Luminescence.
- Cathodoluminescence_microscope wikiPageWikiLink Materials_science.
- Cathodoluminescence_microscope wikiPageWikiLink Microscope.
- Cathodoluminescence_microscope wikiPageWikiLink Mineral.
- Cathodoluminescence_microscope wikiPageWikiLink Mineralogy.
- Cathodoluminescence_microscope wikiPageWikiLink Photonic_crystal.
- Cathodoluminescence_microscope wikiPageWikiLink Quartz.
- Cathodoluminescence_microscope wikiPageWikiLink Rock_(geology).
- Cathodoluminescence_microscope wikiPageWikiLink Scanning_electron_microscope.
- Cathodoluminescence_microscope wikiPageWikiLink Sputter_deposition.
- Cathodoluminescence_microscope wikiPageWikiLink Volcanic_ash.
- Cathodoluminescence_microscope wikiPageWikiLink File:HC3-CL-microscope.gif.
- Cathodoluminescence_microscope wikiPageWikiLink File:Hydr-Qz-tb.jpg.
- Cathodoluminescence_microscope wikiPageWikiLinkText "Cathodoluminescence microscope".
- Cathodoluminescence_microscope wikiPageWikiLinkText "cathodoluminescence microscope".
- Cathodoluminescence_microscope wikiPageUsesTemplate Template:Cite_journal.
- Cathodoluminescence_microscope subject Category:Microscopes.
- Cathodoluminescence_microscope type Instrument.
- Cathodoluminescence_microscope type Instrument.
- Cathodoluminescence_microscope comment "A cathodoluminescence (CL) microscope combines methods from electron and regular (light optical) microscopes. It is designed to study the luminescence characteristics of polished thin sections of solids irradiated by an electron beam.Using a cathodoluminescence microscope, structures within crystals or fabrics can be made visible which cannot be seen in normal light conditions. Thus, for example, valuable information on the growth of minerals can be obtained.".
- Cathodoluminescence_microscope label "Cathodoluminescence microscope".
- Cathodoluminescence_microscope sameAs Q1736296.
- Cathodoluminescence_microscope sameAs Kathodolumineszenzmikroskop.
- Cathodoluminescence_microscope sameAs m.03c83b.
- Cathodoluminescence_microscope sameAs Q1736296.
- Cathodoluminescence_microscope wasDerivedFrom Cathodoluminescence_microscope?oldid=708225609.
- Cathodoluminescence_microscope depiction Hydr-Qz-tb.jpg.
- Cathodoluminescence_microscope isPrimaryTopicOf Cathodoluminescence_microscope.