کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9793818 1514281 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chemical erosion of DIII-D lower divertor tiles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
Chemical erosion of DIII-D lower divertor tiles
چکیده انگلیسی
Spectroscopic measurements in the DIII-D lower divertor have shown an order of magnitude decrease in the brightness of the CD emission band over the course of eight years of plasma discharges. These observations could imply a reduction of the chemical erosion of the carbon component in the divertor. To test this hypothesis, chemical erosion measurements of specimens from the DIII-D lower divertor inner and outer strike points were performed using a low-energy D2+ ion beam, with energies extending down to ∼15 eV/D+. The results indicate that the erosion characteristics of the DIII-D lower divertor plasma-exposed specimens are similar to those of pyrolytic graphite and the virgin DIII-D tile material. The total chemical erosion yields for all specimens peak at ∼2-4% at 700 K for 15 eV/D+, and reach ∼7% for 200 eV/D+.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volumes 337–339, 1 March 2005, Pages 74-78
نویسندگان
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