کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
272723 505030 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tritium sorption and desorption from JET beryllium tiles under temperature, electron radiation and magnetic field
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Tritium sorption and desorption from JET beryllium tiles under temperature, electron radiation and magnetic field
چکیده انگلیسی

Tritium release at annealing of samples cut from beryllium tiles exposed to D + D, D + T plasma in the Joint European Torus (JET) was investigated under 5 MeV fast-electron radiation at the dose rate 14 MGy h−1 and in a magnetic field of 1.7 T separately and simultaneously in order to evaluate possible effects of these factors. Abundances of chemical forms of tritium—molecular T2 (44%), atomic T0 (42%), and ionic T+ (14%) and their distribution were determined in the plasma-exposed beryllium samples with lyomethods. Fast-electron radiation considerably increased the fractional tritium release at annealing by a factor of approximately 5. The magnetic field increased the fractional tritium release at annealing both without and under electron radiation by approximately 25%. Sorption of tritium in samples cut from an unused beryllium tile was investigated at about 1 Pa of T2 at 773 K for 3 h both with and without simultaneous electron radiation and/or magnetic field. The amount of the tritium sorbed was found to be 3.3–6.2 kBq cm−2. Most of the tritium sorbed was localized in subsurface layers up to a depth of 80 μm of the beryllium samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fusion Engineering and Design - Volume 83, Issues 10–12, December 2008, Pages 1388–1391
نویسندگان
, , , , , ,