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Dark Matter Detector Devised

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HUESCA, Spain, Sept. 30, 2009 -- A scintillating bolometer containing a crystal comprised of bismuth, germinate and oxygen (BGO) has been developed to detect the dark matter of the universe. Researchers from the University of Zaragoza in Spain and France's Institut d'Astrophysique Spatiale (IAS) developed the bolometer, which has been tested at the Canfranc Underground Laboratory in Huesca, Spain. To work properly, the device has to be kept supercold, at temperatures near absolute zero (-273.15 °C), and housed under tons of rock in an underground lab.  The BGO scintillator crystal (right) and germanium disc (left)....Read full article

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    Published: September 2009
    Glossary
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    radiation
    The emission and/or propagation of energy through space or through a medium in the form of either waves or corpuscular emission.
    scintillation
    1. The variation in intensity of a light beam as it travels through the atmosphere. 2. In radiation physics, a light flash formed by an ionizing event in a phosphor; a flash formed when rapidly traveling particles, such as alpha particles, travel through matter. 3. In lasers, rapid changes in the levels of irradiance in the cross section of a laser beam.
    absolute zeroBasic ScienceBGOCanfrancCNRScosmic radiationcryogeniccrystalsdark matterdetectionFrancegalaxyIASImagingNews & FeaturesOrsay UniversityparticlesphotonicsphotonsradiationResearch & TechnologyROSEBUDscintillating bolometerscintillationSensors & DetectorsSINCSpainspectroscopyUniversity of ZaragozaWIMPs

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