Sonstiges, Englisch, Band Volume 347, 266 Seiten, Format (B × H): 125 mm x 142 mm, Gewicht: 200 g
Reihe: Defect and Diffusion Forum
Sonstiges, Englisch, Band Volume 347, 266 Seiten, Format (B × H): 125 mm x 142 mm, Gewicht: 200 g
Reihe: Defect and Diffusion Forum
ISBN: 978-3-03795-653-3
Verlag: Trans Tech Publications
This special volume consists of eight chapters consisting of seven Review papers and one Research paper. ?Luminescence Phenomena: An Introduction? is the first Chapter contributed by KVR Murthy and HS Virk. It explains the basic phenomenon of Luminescence: ?Luminescence is "cold light", light from other sources of energy which can take place at normal and lower temperatures. The word luminescence was first used by a German physicist, Eilhardt Wiedemann, in 1888. In Latin ?Lumen? means ?light?. The materials exhibiting this phenomenon are known as ?Luminescent materials? or ?Phosphors? meaning ?light bearer? in Greek. Luminescence is basically a phenomenon of emission of light from an insulator followed by prior absorption of energy from ionizing radiations like, X-rays, alpha, beta and gamma radiations. The energy lifts the atoms of the material into an excited state, and then, because excited states are unstable, the material undergoes another transition, back to its unexcited ground state, and the absorbed energy is liberated in the form of either light or heat or both. The excitation involves only the outermost electrons orbiting around the nuclei of the atoms. Luminescence efficiency depends on the degree of transformation of excitation energy into light, and there are relatively few materials that have sufficient luminescence efficiency to be of practical value?.
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Luminescence Phenomena: An IntroductionThermoluminescence and its Applications: A ReviewRecent Advances and Opportunities in TLD Materials: A ReviewLuminescence Dating: Basic Approach to GeochronologyElastico-Mechanoluminescence of Thermoluminescent CrystalsThermoluminescent Phosphors for Radiation DosimetryUse of OSL and TL of Electronic Components of Portable Devices for Retrospective Accident DosimetryOptical and Morphological Studies of Doped Core Shell ZnS:Cu/ZnS Nanoparticles
