@article{7124,
  author = {J. Westerhout and D. Borodin and R.S. Al and S. Brezinsek and Mhjt Hoen and A. Kirschner and S. Lisgo and H. J. van der Meiden and V. Philipps and M.J. van de Pol and A. E. Shumack and G. De Temmerman and W. A. J. Vijvers and G. M. Wright and N. J. L. Cardozo and J. Rapp and G. J. van Rooij},
  title = {Chemical erosion of different carbon composites under ITER-relevant plasma conditions},
  abstract = {We have studied the chemical erosion of different carbon composites in Pilot-PSI at ITER-relevant hydrogen plasma fluxes (similar to 10(24) m(-2) s(-1)) and low electron temperatures (T-e similar to 1 eV). Optical emission spectroscopy on the CH A-X band was used to characterize the chemical sputtering. Fine grain graphite (R 6650, SGL Carbon Group), ITER-reference carbon fiber composite material (SNECMA NB31 and NB41; Dunlop 3D), nano-and micro-crystalline diamond coatings on molybdenum and SiC (Silit (R) SKD Reaction-Bonded, Saint-Gobain Ceramics) were compared. The chemical sputtering was similar for the different composites under comparable plasma conditions, except for SiC, which produced a ten times lower rate. The CH emission was constant at electron temperatures T-e > 1 eV and ion fluxes ranging between 10(23) and 10(24) m(-2) s(-1), but decreased at lower temperatures. This decrease is possibly due to changes in the excitation of CH and not due to a change in the chemical erosion rate.},
  year = {2009},
  journal = {Physica Scripta},
  volume = {T138},
  pages = {4},
  month = {Dec},
  isbn = {0031-8949},
  url = {<Go to ISI>://000273199200018 },
  note = {ISI Document Delivery No.: 538QNTimes Cited: 1Cited Reference Count: 19},
  language = {English},
}