کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1569168 1514257 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Post mortem analysis of a JET quartz microbalance system
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
Post mortem analysis of a JET quartz microbalance system
چکیده انگلیسی
In the year 2001, a quartz microbalance system (QMB) was installed in the remote area of the inner JET divertor to investigate in situ material erosion and redeposition processes. When removed in 2004, the system was found to be coated all over with carbon deposits. The deposit on the quartz oscillator and the outer and inner housing was analysed by various methods, as SIMS (secondary ion mass spectroscopy), stylus depth profilometry, EPMA (electron probe microanalysis), TIPT (Tritium imaging plate technique) and colorimetry and compared to the frequency change of the quartz. The layer thickness was determined to 1.85 ± 0.1 μm in average on an area of 0.95 cm2 which has to be related to the equivalent of 1.77 × 10−4 g measured from the frequency change of 23 640 Hz. This corresponds to a carbon areal density of 9.3 × 1018 C atoms/cm2. Significant deposition was found also on the surfaces inside the QMB housing which can only be understood if reflection and low sticking is assumed for a high fraction of particles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volumes 363–365, 15 June 2007, Pages 146-151
نویسندگان
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