An appraisal of deuterium retention in JET
An appraisal of deuterium retention in JET
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JET 中氘保留的评估
DOI：
10.1016/0022-3115(95)80021-2
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发表时间：
1995
影响因子：
3.1
通讯作者：
J. Coad
中科院分区：
文献类型：
--
作者：
J. Coad
1985 年至 1989 年的活动后，JET 容器内保留的氘量已被重新评估，结果表明 D 和壁材料的共沉积是主要保留机制。在覆盖期间，Be 通过蒸发第一壁上的薄层并作为限制材料引入到 JET 中：事实证明，Be 的添加对 D 库存的积累速率几乎没有影响。每个脉冲保留的量（平均每脉冲 4 × 1020D 原子）与模型非常吻合，其中放电期间穿过等离子体的碳（或其他壁材料）的量决定了最大保留量（只有在第一壁温度不超过 270°C 时才能实现）。这样的模型可以适用于预测其他大型机器中氢同位素的保留。
The amounts of deuterium retained within the JET vessel after campaigns in the years 1985 to 1989 have been reevaluated and shown to indicate that codeposition of D and wall material is the principal retention mechanism. During the period covered Be was introduced into JET by evaporating thin layers over the first wall and as a limiter material: the addition of Be is shown to have little effect on the rate of accumulation of the D inventory. The amount retained per pulse (/ ̃ 4 × 1020D atoms per pulse on average) is shown to fit well with a model wherein the amount of carbon (or other wall material) passing through the plasma during the discharge determines the maximum retention (which can only be realised if first wall temperatures do not exceed 270°C). Such a model may be adapted to predict hydrogen isotope retention in other large machines.