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Deuterium Uptake in Magnetic-Fusion Devices with Lithium-Conditioned Carbon Walls

机译:含锂碳壁的磁熔设备中的氘吸收

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摘要

Lithium wall conditioning has lowered hydrogenic recycling and dramatically improved plasma performance in many magnetic-fusion devices. In this Letter, we report quantum-classical atomistic simulations and laboratory experiments that elucidate the roles of lithium and oxygen in the uptake of hydrogen in amorphous carbon. Surprisingly, we show that lithium creates a high oxygen concentration on a carbon surface when bombarded by deuterium. Furthermore, surface oxygen, rather than lithium, plays the key role in trapping hydrogen.
机译:锂壁调节降低了氢的循环利用,并大大改善了许多磁融合设备的等离子体性能。在这封信中,我们报告了量子经典原子模拟和实验室实验,阐明了锂和氧在无定形碳中吸收氢的作用。出乎意料的是,我们表明锂在受到氘轰击时会在碳表面上产生高浓度的氧气。此外,表面氧而不是锂在捕集氢中起关键作用。

著录项

  • 来源
    《Physical review letters》 |2013年第10期|105001.1-105001.5|共5页
  • 作者单位

    Joint Institute of Computational Sciences, University of Tennessee, Knoxville, Tennessee 37996-3460, USA Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200, USA Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6372, USA;

    School of Nuclear Engineering, Purdue University, West Lafayette, Indiana, USA and Birck Nanotechnology Center,West Lafayette, Indiana 47907, USA;

    School of Nuclear Engineering, Purdue University, West Lafayette, Indiana 47907, USA and Fusion Safety Program,Idaho National Laboratory, Idaho Falls, Idaho 83415, USA;

    Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200, USA Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, USA;

    Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto 606 8103, Japan;

    Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto 606 8103, Japan;

    National Institute for Computational Sciences, University of Tennessee, Oak Ridge, Tennessee 37831-6173, USA;

    PIIM, CNRS, and Aix-Marseille University, 13397 Marseille cedex 20, France;

    Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fusion reactors; plasma-material interactions; boundary layer effects; electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals; plasma reactions (including flowing afterglow and electricrndischarges);

    机译:聚变反应堆等离子体与材料的相互作用边界层效应;纳米级材料的电子结构:簇;纳米颗粒;纳米管和纳米晶体;等离子体反应(包括流动的余辉和放电);

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