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Skinner, C.H.; Gentile, C.A.; Guttadora, G.; Carpe, A.; Langish, S.; Young, K.M.; Nishi, M.; Shu, W.
Princeton Plasma Physics Lab., NJ (United States). Funding organisation: USDOE Office of Science (United States)2001
Princeton Plasma Physics Lab., NJ (United States). Funding organisation: USDOE Office of Science (United States)2001
AbstractAbstract
[en] A novel laser heating technique has recently been applied to removing tritium from carbon tiles that had been exposed to deuterium-tritium (DT) plasmas in the Tokamak Test Fusion Reactor (TFTR). A continuous wave neodymium laser, of power up to 300 watts, was used to heat the surface of the tiles. The beam was focused to an intensity, typically 8 kW/cm2, and rapidly scanned over the tile surface by galvanometer-driven scanning mirrors. Under the laser irradiation, the surface temperature increased dramatically, and temperatures up to 2,300 degrees C were recorded by an optical pyrometer. Tritium was released and circulated in a closed-loop system to an ionization chamber that measured the tritium concentration. Most of the tritium (up to 84%) could be released by the laser scan. This technique appears promising for tritium removal in a next-step DT device as it avoids oxidation, the associated deconditioning of the plasma facing surfaces, and the expense of processing large quantities of tritium oxide. Some engineering aspects of the implementation of this method in a next-step fusion device will be discussed
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16 Nov 2001; 9 p; T2001 International Conference on Tritium Science and Technology; Tsukuba, Ibaraki (Japan); 11-16 Nov 2001; AC02-76CH03073; Also available from OSTI as DE00792842; PURL: https://www.osti.gov/servlets/purl/792842-WN9qJV/native/
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Report
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Conference
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BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CHALCOGENIDES, CLEANING, CLOSED PLASMA DEVICES, HEATING, HYDROGEN COMPOUNDS, HYDROGEN ISOTOPES, ISOTOPES, LASERS, LIGHT NUCLEI, MEASURING INSTRUMENTS, NUCLEI, ODD-EVEN NUCLEI, OXIDES, OXYGEN COMPOUNDS, PLASMA HEATING, PYROMETERS, RADIATION DETECTORS, RADIOISOTOPES, SOLID STATE LASERS, SURFACE FINISHING, THERMONUCLEAR DEVICES, THERMONUCLEAR REACTOR WALLS, TOKAMAK DEVICES, TRITIUM COMPOUNDS, WATER, YEARS LIVING RADIOISOTOPES
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