Chemical response of lithiated graphite with deuterium irradiation
作者： C. N. Taylor , B. Heim , J. P. Allain
DOI: 10.1063/1.3555097
关键词: Graphite 、 Analytical chemistry 、 Irradiation 、 Deuterium 、 Electron spectroscopy 、 Plasma 、 X-ray photoelectron spectroscopy 、 Chemical state 、 Nuclear chemistry 、 Chemistry 、 Spectroscopy
摘要: Lithium wall conditioning has been found to enhance plasma performance for graphite walled fusion devices such as TFTR, CDX-U, T-11M, TJ-II and NSTX. Among observed enhancements is a reduction in edge density reduced deuterium recycling. The mechanism by which lithiated retains largely unknown. Under controlled laboratory conditions, X-ray photoelectron spectroscopy (XPS) used observe the chemical changes that occur on ATJ after lithium deposition. state of change upon irradiation indicating formation Li-O-D, manifest at 532.9 ± 0.6 eV. Lithium-deuterium interactions are also C 1s energy range show Li-C-D 291.2 ± 0.6 Post-mortem NSTX tiles have exposed air extraction cleaned examined, revealing archaeology formed during operations. XPS spectra strong correlation (± 0.3 eV) Li-O-D Li-O pea...
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