Lithium titanate, Li2TiO3, was irradiated with deuterium ions with energy of 1.7 keV and then exposed to helium or helium-hydrogen mixed gas at different temperature, in order to evaluate the effect of exposure gas on removing deuterium from the pebbles. The amount of residual deuterium in the irradiated pebbles after the gas exposure was measured by thermal desorption spectroscopy. The mixing of hydrogen gas into helium gas enhanced the removal amount of deuterium. In other words, the amount of residual deuterium after the helium-hydrogen mixed gas exposure at low temperature was lower than that after the helium gas exposure. The ion irradiation followed by heating for the pebbles was repeated, and the residual amount of deuterium was measured. The residual amount increased with the number of irradiation/heating cycles. The result suggests that the tritium inventory in the blanket in a fusion reactor changes after the operation.
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机译：用能量为1.7 keV的氘离子辐照钛酸锂Li 2 TiO 3 ，然后在不同温度下暴露于氦气或氦气-氢气混合气体中，以便评估暴露气体对去除鹅卵石中氘的影响。通过热解吸光谱法测量暴露于气体后的经照射的鹅卵石中的残留氘量。氢气与氦气的混合提高了氘的去除量。换句话说，在低温下暴露于氦-氢混合气体之后的残留氘量低于暴露于氦气之后的残留氘量。重复离子照射，然后加热卵石，并测量氘的残留量。残留量随着照射/加热循环次数的增加而增加。结果表明，聚变反应堆毯子中inventory的存量在运行后会发生变化。
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