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PI Physik Instrumente - Revolution In Photonics Align LW LB 3/24

Large Lenses Enable Fusion Research

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OXFORDSHIRE, England, March 17, 2010 — The largest lenses ever produced for a fusion research facility are being used to measure plasma density and temperatures up to 23 million ºC inside the MegaAmp Spherical Tokamak (MAST) experiment at the Culham Centre for Fusion Energy (CCFE). Supplied by Spanoptic Ltd. of Glenrothes, Scotland, the six lenses collect light scattered from laser beams fired into the tokamak, a technique known as Thomson scattering. Measuring plasma properties such as temperature and density is one of the most challenging aspects of fusion research. The Thomson scattering diagnostic is based on...Read full article

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    Published: March 2010
    Glossary
    fusion
    1. The combination of the effects of two or more stimuli in any given sense to form a single sensation. With respect to vision, the perception of continuous illumination formed by the rapid successive presentation of light flashes at a specified rate. 2. The transition of matter from solid to liquid form. 3. With respect to atomic or nuclear fusion, the combination of atomic nuclei, under extreme heat, to form a heavier nucleus.
    plasma
    A gas made up of electrons and ions.
    thomson scattering
    The scattering of electromagnetic waves by free electrons, whereby the incident radiation and the scattered radiation are of the same wavelength.
    CCFECulham Centre for Fusion EnergydensityenergyEuropefusionImagingindustriallensesMartin DunstanMASTMegaAmp Spherical TokamakOpticsplasmaResearch & TechnologyRichard GreenSpanoptic Ltd.temperatureTest & MeasurementThomson scatteringtokamakUniversity of YorkLasers

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