Effect of neutron spectra on the transmutation of first wall materials
Effect of neutron spectra on the transmutation of first wall materials
复制标题
中子能谱对第一壁材料嬗变的影响
DOI：
10.1016/s0022-3115(96)00108-0
复制
发表时间：
1996
影响因子：
3.1
通讯作者：
M. Fijita
中科院分区：
文献类型：
--
作者：
T. Noda;M. Fijita
基于ITER设计模型，对第一壁材料9 Cr ~（12）W钢、V ~（15）Cr ~（15）Ti和SiC在SUS 316/Li_2O/H_2O（SUS）、9 Cr ~（12）W/Li_2O/H_2O（RAF）、V合金/Li/Be（V）和SiC/Li_2ZrO_3/He（SiC）包层/屏蔽系统中的嬗变进行了计算.中子能谱随包层/屏蔽层组成的不同而变化。低能中子通量按V < SiC < SUS包层/屏蔽系统的顺序减小。在SUS或RAF系统中，预测了9 Cr-12 W钢中W的相当数量的贫化和V-12 Cr-12 Ti中Cr含量的增加。如果使用Li冷却剂代替水，则估计W和Cr的浓度变化被抑制。氦和氢的产生不会受到不同包层/屏蔽层组成的强烈影响。
Transmutation calculations were carried out for candidate first wall materials such as 9 Cr2 W steel, V5 Cr5 Ti and SiC in SUS316/Li2O/H2O(SUS), 9 Cr W/Li2O/H2O(RAF), V alloy/Li/Be(V), and SiC/Li2ZrO3/He(SiC) blanket/shield systems based on ITER design model. Neutron spectrum varies with different blanket/shield compositions. The flux of low energy neutrons decreases in order of V < SiC < SUS blanket/shield systems. Fair amounts of W depletion in 9 Cr2 W steel and the increase of Cr content in V Cr Ti were predicted in SUS or RAF systems. Concentration change in W and Cr is estimated to be suppressed if Li coolant is used in place of water. Helium and hydrogen production are not strongly affected by the different blanket/shield compositions.