Construction of calculation code to analyze bred tritium release curve from solid breeder materials

为了了解陶瓷增殖材料微晶烧结卵石包层体系中的氚行为，有必要了解如下几个氚转移步骤的贡献：(1)晶体中的氚形成反应，(2)晶体中的氚向颗粒表面的扩散，(3)迁移的氚与晶体中形成的辐照缺陷的相互作用，(4)氚在晶体中的吸收，(5)氚在颗粒表面的吸附或解吸，(6)分子态氢、氢、在气流和颗粒表面的氚(同位素交换反应1)中，(7)气流中的水蒸气H_20与颗粒表面的氚之间的同位素交换反应(同位素交换反应2)，(8)在包层净化气体中添加H_2时在颗粒表面形成水的反应，特别是在高温下，(9)氢同位素和水通过烧结鹅卵石的气孔转移，(10)氢同位素和水通过在烧结鹅卵石表面形成的边界层转移到气流中。

In order to understand the tritium behavior in a blanket system packed with sintered pebbles of micro crystal grains of ceramic breeder material, it is necessary to know the contribution of such tritium transfer steps as(1) tritium formation reaction in crystal grain, (2) diffusion of tritium in crystal grain to the grain surface, (3) interaction of migrating tritium with irradiation defects formed in crystal grain, (4) absorption of tritium into bulk of crystal grain, (5) adsorption or desorption of tritium on grain surface, (6) isotope exchange reaction between molecular form hydrogen, H_2, in the gas stream and tritium on grain surface (isotope exchange reaction 1), (7) isotope exchange reaction between water vapor, H_20, in the gas stream and tritium on grain surface (isotope exchange reaction 2), (8) water formation reaction on grain surface at addition of H_2 to the blanket purge gas especially at high temperature, (9) transfer of hydrogen isotopes and water through pores of the sintered pebble, (10) transfer of hydrogen isotopes and water through boundary layer formed on the surface of a sintered pebbles to the gas stream.