Employing of ZrCo as a fuel source in a discharge-type fusion neutron source operated in self-sufficient mode
Employing of ZrCo as a fuel source in a discharge-type fusion neutron source operated in self-sufficient mode
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DOI：
10.1016/j.ijhydene.2021.10.250
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发表时间：
2021-11
影响因子：
7.2
通讯作者：
S. Kenjo;Y. Ogino;K. Mukai;M. Bakr;J. Yagi;S. Konishi
中科院分区：
文献类型：
--
作者：
S. Kenjo;Y. Ogino;K. Mukai;M. Bakr;J. Yagi;S. Konishi
放电型聚变中子源通过氢同位素原子的聚变反应产生中子。为了运行基于氘-氚（D-T）聚变反应的聚变装置，需要减少氚存量。在目前的工作中，一个自给自足的系统被安装到聚变装置中，用于减少氢同位素燃料气体的量。在该系统中，在密封室中供应燃料气体并与金属间化合物ZrCo一起回收。氘-氘操作保持在稳定的放电电压下超过60分钟，并且改变ZrCo床的温度以提高中子产生率。确定并优化了影响室内压力的因素。使用四极质谱仪进行的气体分析表明，氘燃料的稀释是由所供应的氘气与腔室和电极表面上所吸收的氚之间的氢同位素交换引起的。提出了该系统的氢同位素控制方法和D-T操作的燃料量。
A discharge-type fusion neutron source generates neutrons by fusion reactions of hydrogen isotope atoms. In order to operate the fusion device based on the deuterium–tritium (D–T) fusion reaction, the tritium inventory is required to be decreased. In the present work, a self-sufficient system was installed into the fusion device for reducing the amount of hydrogen isotope fuel gas. The fuel gas was supplied and recovered with an intermetallic compound ZrCo in a sealed chamber in this system. A deuterium–deuterium operation was maintained for more than 60 min with stable discharge voltages, and the temperature of the ZrCo bed was changed to improve the neutron production rate. Factors that influenced the pressure inside the chamber were determined and optimized. Gas analysis using a quadrupole mass spectrometer indicates a dilution of the deuterium fuel was caused by hydrogen isotope exchange between the supplied deuterium gas and the absorbed protium on the chamber and electrodes surface. This system's hydrogen isotope control method and the amount of fuel were proposed for a D–T operation.