کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1569170 1514257 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Toroidally asymmetric distributions of hydrocarbon (CD) emission and chemical sputtering sources in DIII-D
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
Toroidally asymmetric distributions of hydrocarbon (CD) emission and chemical sputtering sources in DIII-D
چکیده انگلیسی

Measurements in DIII-D show that the carbon chemical sputtering sources along the inner divertor and center post are toroidally periodic and highest at the upstream tile edge. Imaging with a tangentially viewing camera and visible spectroscopy were used to monitor the emission from molecular hydrocarbons (CH/CD) at 430.8 nm and deuterium neutrals in attached and partially detached divertors of low-confinement mode plasmas. In contrast to the toroidally periodic CD distribution, emission from deuterium neutrals was observed to be toroidally symmetric along the inner strike zone. The toroidal distribution of the measured tile surface temperature in the inner divertor correlates with that of the CD emission, suggesting larger parallel particle and heat fluxes to the upstream tile edge, either due to toroidal tile gaps or height steps between adjacent tiles.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volumes 363–365, 15 June 2007, Pages 157–161
نویسندگان
, , , , , ,