کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9793822 | 1514281 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Model development and analysis of temperature-dependent lithium sputtering and sputtered Li+ transport for tokamak plasma-facing applications
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
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چکیده انگلیسی
We developed and applied models for overall (atom + ion) sputtering and sputtered Li+ transport of liquid lithium tokamak divertor surfaces. The model/analysis has four parts: (1) a temperature-dependent data-calibrated empirical/code (TRIM) model of lithium sputtering by D+ and Li+ as a function of incident particle energy and angle; (2) temperature and energy-dependent molecular dynamics (MolDyn) modeling using an effective interionic pair potential of surface-reflected redeposited Li+; (3) analytical model of reflected lithium charge state; and (4) analytic model of Li+ near-surface emission/redeposition cascade. We predict: (1) strong temperature dependence of sputter yields, (2) reflection coefficients of order 50% (thermal energies) and 10% (hyperthermal energies), (3) reflected lithium charge fractions of 10-30% near 1 eV incidence, and (4) enhanced but non-runaway Li emission for the studied surface temperature range between 473 and 653 K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volumes 337â339, 1 March 2005, Pages 94-98
Journal: Journal of Nuclear Materials - Volumes 337â339, 1 March 2005, Pages 94-98
نویسندگان
J.P. Allain, J.N. Brooks, D.A. Alman, L.E. Gonzalez,