ITER divertor sputtering erosion -- recent analysis for carbon, beryllium, tungsten, and niobium surfaces

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ITER divertor plate sputtering erosion has been analyzed using current design information and updated impurity transport models. The REDEP erosion/redeposition code was used to compute erosion for a very low plasma divertor temperature (T{sub e{sub 0}} {approx} 12 eV) physics phase reference'' case, and for other plasma conditions. A high surface temperature case (T{sub s{sub 0}} = 1800{degree}C) is analyzed for a carbon surface. Niobium is analyzed using WBC near-surface transport code results for the redeposited charge state. The REDEP results show high net erosion rates ({approx gt} 20 cm/burn{sm bullet}yr) for beryllium and carbon, even at low plasma temperatures. ... continued below

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11 pages

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Brooks, J.N. July 1, 1991.

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ITER divertor plate sputtering erosion has been analyzed using current design information and updated impurity transport models. The REDEP erosion/redeposition code was used to compute erosion for a very low plasma divertor temperature (T{sub e{sub 0}} {approx} 12 eV) physics phase reference'' case, and for other plasma conditions. A high surface temperature case (T{sub s{sub 0}} = 1800{degree}C) is analyzed for a carbon surface. Niobium is analyzed using WBC near-surface transport code results for the redeposited charge state. The REDEP results show high net erosion rates ({approx gt} 20 cm/burn{sm bullet}yr) for beryllium and carbon, even at low plasma temperatures. Net erosion rates are low to moderate for niobium ({approximately}0-3 cm/burn{sm bullet}yr), depending on plasma conditions, and low for tungsten ({approximately}0-0.2 cm/burn{sm bullet}yr). 9 refs., 2 figs.

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11 pages

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OSTI; NTIS; INIS; GPO Dep.

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  • Other: DE91017235
  • Report No.: ANL/FPP/TM-255
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/5439807 | External Link
  • Office of Scientific & Technical Information Report Number: 5439807
  • Archival Resource Key: ark:/67531/metadc1065052

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  • July 1, 1991

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  • Feb. 4, 2018, 10:51 a.m.

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  • April 26, 2019, 1:26 p.m.

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Brooks, J.N. ITER divertor sputtering erosion -- recent analysis for carbon, beryllium, tungsten, and niobium surfaces, report, July 1, 1991; Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1065052/: accessed May 24, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.