Deuterium release measurements in the Be phase of JET and determination of tritium content in the exhaust gas
Deuterium release measurements in the Be phase of JET and determination of tritium content in the exhaust gas
复制标题
JET Be 阶段的氘释放测量以及废气中氚含量的测定
DOI：
10.1016/0022-3115(90)90117-6
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发表时间：
1990
影响因子：
3.1
通讯作者：
D. Holland
中科院分区：
文献类型：
--
作者：
R. Sartori;G. Saibene;D. Goodall;E. Usselmann;P. Coad;D. Holland
在这项工作中，气体平衡测量的结果，在铍阶段的JET和类似的数据从碳相比较。气体平衡计算是通过测量放电后的气体释放量并将其与总燃料量进行比较来进行的。这些测量提供了有关氢同位素容器内保留的直接信息。在引入铍之后，典型排放的燃料需求增加了1/2，测得的气体释放量大幅增加。非破坏性发射后的平均氘回收率为输入量的100 - 35-50%。对于长期测量，该百分比增加到10%- 80%。壁中的氘库存是类似的C和Be。一些氚释放测量。回收的氚的分数，无论是在放电后，并在长期，是约一半的氘的测量分数。D和T释放数据的分析导致的观察，表面效应占主导地位的气体释放后，放电。
In this work the results of gas balance measurements during the beryllium phases of JET are presented and compared with similar data from the carbon phase. Gas balance calculations are carried out by measuring the gas release after a discharge and comparing it to the total fuelling. These measurements give direct information on the in-vessel retention of hydrogen isotopes. After the introduction of beryllium the fuelling requirements of a typical discharge increased by a factor of ∼- 2 and the measured gas release increased substantially. The average deuterium recovery after a non-disruptive shot is ∼- 35–50% of the input. This percentage increases to ∼- 80% for long term measurements. The deuterium inventory in the walls is similar for C and Be.Some tritium release measurements are presented. The fraction of tritium recovered, both following the discharge and on the long term, is about half of the measured fraction of deuterium. The analysis of D and T release data leads to the observation that surface effects dominate the gas release after the discharge.