Deuterium retention of ferritic steel irradiated by energetic hydrogen ions
Deuterium retention of ferritic steel irradiated by energetic hydrogen ions
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DOI：
10.1016/j.jnucmat.2008.12.293
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发表时间：
2009-04
影响因子：
3.1
通讯作者：
T. Hino;Y. Katada;Y. Yamauchi;M. Akiba;S. Suzuki;T. Ezato
中科院分区：
文献类型：
--
作者：
T. Hino;Y. Katada;Y. Yamauchi;M. Akiba;S. Suzuki;T. Ezato
用高能氢离子对铁素体钢(F82H)进行辐照损伤。用能量为1.7keV的重离子辐照损伤铁素体钢，研究了重离子对重离子的吸附和脱附行为。重离子注量达到5×1018D/cm2。在1×10~(18)D/cm~2处，存放量随重离子注量的增加而增加，并达到饱和。可以清楚地看到，随着氢离子辐照损伤的增加，残留的氘的量也增加了。例如，在4 dpa的样品中的滞留量是未损坏样品的数倍。实验还发现，与未损伤的样品相比，脱附温度提高了约70K。这些结果表明，由于辐照损伤，燃料氢的捕获位置和捕获能量增加。目前的结果表明，燃料氢回收和容器内氚库存都因辐射损伤而增加。
Ferritic steel (F82H) was irradiated by energetic hydrogen ions to make a irradiation damage. The damaged ferritic steel was irradiated by deuterium ions with energy of 1.7keV in order to investigate the retention and desorption behavior of deuterium. The deuterium ion fluence was taken up to 5×1018D/cm2. The amount of retained deuterium increased as the deuterium ion fluence and saturated at 1×1018D/cm2. It was clearly seen that the amount of retained deuterium increased as the damage caused by the hydrogen ion irradiation. For example, the amount of retained deuterium in the sample with 4 dpa was several times larger than that in the sample without damage. It was also seen that the desorption temperature approximately 70K increased compared with that without damage. These results suggest that the number of trapping site and trapping energy for fuel hydrogen increases owing to the irradiation damage. The present results show that both fuel hydrogen recycling and in-vessel tritium inventory increases by the irradiation damage.