کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8023336 1517534 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Gradient coating for NIF double shell targets
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Gradient coating for NIF double shell targets
چکیده انگلیسی
As opposed to a single shell, the double shell target design provides an alternative implosion platform for high energy density (HED) experiments at the National Ignition Facility (NIF) and related laboratories. The inner shell of this target scheme incorporates a density graded layer to suppress inhomogeneity induced Rayleigh-Taylor instabilities during the implosion. Here we report our efforts to fabricate density graded layers for use as the inner shell of a double shell target using magnetron sputtering as well as the characterization of these layers. Cold welding (spherical targets sticking to either each other or the deposition pan) was observed for many of metals surveyed and seems to be correlated with material ductility. A W-Be gradient layer was successfully fabricated as an inner shell. This material combination is advantageous due to the constituent's large inherent density difference. Microstructural changes are revealed with varying composition including a previously unknown amorphous phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 349, 15 September 2018, Pages 838-845
نویسندگان
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