Improvement in Plasma Performance with Lithium Coatings in NSTX

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Lithium as a plasma-facing material has attractive features, including a reduction in the recycling of hydrogenic species and the potential for withstanding high heat and neutron fluxes in fusion reactors. Dramatic effects on plasma performance with lithium-coated plasma-facing components (PFC's) have been demonstrated on many fusion devices, including TFTR, T-11M, and FT-U. Using a liquid-lithium-filled tray as a limiter, the CDX-U device achieved very significant enhancement in the confinement time of ohmically heated plasmas. The recent NSTX experiments reported here have demonstrated, for the first time, significant and recurring benefits of lithium PFC coatings on divertor plasma performance in both ... continued below

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6 p. (0.3 MB)

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Kaita, R February 17, 2009.

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Lithium as a plasma-facing material has attractive features, including a reduction in the recycling of hydrogenic species and the potential for withstanding high heat and neutron fluxes in fusion reactors. Dramatic effects on plasma performance with lithium-coated plasma-facing components (PFC's) have been demonstrated on many fusion devices, including TFTR, T-11M, and FT-U. Using a liquid-lithium-filled tray as a limiter, the CDX-U device achieved very significant enhancement in the confinement time of ohmically heated plasmas. The recent NSTX experiments reported here have demonstrated, for the first time, significant and recurring benefits of lithium PFC coatings on divertor plasma performance in both L- and H- mode regimes heated by neutral beams.

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6 p. (0.3 MB)

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PDF-file: 6 pages; size: 0.3 Mbytes

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  • Presented at: 35th EPS Plasma Physics Conference, Hersonissos, Greece, Jun 09 - Jun 13, 2008

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  • Report No.: LLNL-PROC-410675
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 1020349
  • Archival Resource Key: ark:/67531/metadc833971

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  • February 17, 2009

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • April 13, 2017, 6:22 p.m.

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Kaita, R. Improvement in Plasma Performance with Lithium Coatings in NSTX, article, February 17, 2009; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc833971/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.