Tritium Removal from Codeposits on Carbon Tiles by a Scanning Laser

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Description

A novel method for tritium release has been demonstrated on codeposited layers on graphite and carbon-fiber-composite tiles from the Tokamak Fusion Test Reactor (TFTR). A scanning continuous wave Nd laser beam heated the codeposits to a temperature of 1200-2300 degrees C for 10 to 200 milliseconds in an argon atmosphere. The temperature rise of the codeposit was significantly higher than that of the manufactured tile material (e.g., 1770 degrees C cf. 1080 degrees C). A major fraction of tritium was thermally desorbed with minimal change to the surface appearance at a laser intensity of 8 kW/cm(superscript ''2''), peak temperatures above ... continued below

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519 Kilobytes pages

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Skinner, C.H.; Gentile, C.A.; Carpe, A.; Guttadora, G.; Langish, S.; Young, K.M. et al. September 28, 2001.

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Description

A novel method for tritium release has been demonstrated on codeposited layers on graphite and carbon-fiber-composite tiles from the Tokamak Fusion Test Reactor (TFTR). A scanning continuous wave Nd laser beam heated the codeposits to a temperature of 1200-2300 degrees C for 10 to 200 milliseconds in an argon atmosphere. The temperature rise of the codeposit was significantly higher than that of the manufactured tile material (e.g., 1770 degrees C cf. 1080 degrees C). A major fraction of tritium was thermally desorbed with minimal change to the surface appearance at a laser intensity of 8 kW/cm(superscript ''2''), peak temperatures above 1230 degrees C and heating duration 10-20 milliseconds. In two experiments, 46% and 84% of the total tritium was released during the laser scan. The application of this method for tritium removal from a tokamak reactor appears promising and has significant advantages over oxidative techniques.

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519 Kilobytes pages

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INIS; OSTI as DE00788203

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  • Other Information: PBD: 28 Sep 2001

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  • Report No.: PPPL-3603
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/788203 | External Link
  • Office of Scientific & Technical Information Report Number: 788203
  • Archival Resource Key: ark:/67531/metadc724519

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • September 28, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 18, 2016, 1:10 p.m.

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Skinner, C.H.; Gentile, C.A.; Carpe, A.; Guttadora, G.; Langish, S.; Young, K.M. et al. Tritium Removal from Codeposits on Carbon Tiles by a Scanning Laser, report, September 28, 2001; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc724519/: accessed October 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.