Comparison of the thermal stability of the codeposited carbon/hydrogen layer to that of the saturated implant layer
Comparison of the thermal stability of the codeposited carbon/hydrogen layer to that of the saturated implant layer
复制标题
共沉积碳/氢层与饱和注入层的热稳定性比较
DOI：
10.1016/0022-3115(90)90179-q
复制
发表时间：
1990
影响因子：
3.1
通讯作者：
D. Walsh
中科院分区：
文献类型：
--
作者：
R. Causey;W. Wampler;D. Walsh
本文介绍了在碳衬里聚变堆中形成的碳/氢共沉积层在空气和真空中的热稳定性的实验研究结果。结果还提出了由高能氢离子注入到石墨表面形成的饱和层的稳定性。对于这两种膜，氢同位素释放发生在空气中的温度比在真空中低得多。在高于600 K的温度下，氢同位素在空气中的释放非常迅速，并以可冷凝的形式释放。据推测，同位素与空气中的水交换是造成这种释放的原因。在真空中，需要超过1000 K的温度来产生从任一膜的快速释放。讨论了这些结果对碳衬里聚变堆中氚安全性的影响。
This paper presents the results of an experimental study of the thermal stability in air and vacuum of the codeposited carbon/hydrogen layer formed in a carbon-lined fusion reactor. Results are also presented for the stability of the saturated layer formed by the implantation of energetic hydrogen ions into a graphite surface. For both films, the hydrogen isotope release occurs at a much lower temperature in air than it does in vacuum. At temperatures above 600 K, the hydrogen isotope release in air is very rapid and is emitted in a condensible form. It is speculated that isotopic exchange with water present in the air is responsible for this release. In vacuum, temperatures in excess of 1000 K are required to produce a rapid release from either film. The implications of these results to the safety of tritium in carbon-lined fusion reactors are discussed.