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首页> 外文期刊>Journal of Nuclear Materials: Materials Aspects of Fission and Fusion >IMPURITY AND PARTICLE RECYCLING REDUCTION BY BORONIZATION IN JT-60U
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IMPURITY AND PARTICLE RECYCLING REDUCTION BY BORONIZATION IN JT-60U

机译:JT-60U硼化的杂质和颗粒回收率降低

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In JT-60U boronization using decaborane was carried out. Boronization reduced the oxygen impurity in OH discharges and shortened the wall conditioning after the vacuum vessel vent and consequently enabled JT-60U to produce clean plasmas easily except for NB heated plasmas. After boronization, particle recycling was reduced drastically in OH and NB discharges. High confinement plasmas were obtained including high beta(p) mode and H-mode discharges. In the latest boronization part of divertor plates were replaced with B4C coated tiles with a B4C thickness similar to 300 mu m. After introducing B4C divertor tiles, an explosive generation of boron particles from the tiles was observed. By the combined effects of boronization with decaborane and boron generation from B4C tiles, oxygen impurity was so low that oxygen line signals were reduced to noise levels after the latest boronization. On the other hand, boron burst from the B4C tiles restricted the operation of JT-60U. [References: 14]
机译:在JT-60U中,使用十硼烷进行了硼化处理。硼化减少了OH放电中的氧杂质,并缩短了真空容器排气后的壁调节时间,因此,除了NB加热的等离子体外,JT-60U还能轻松产生干净的等离子体。硼化后,OH和NB排放物的颗粒回收率大大降低。获得了高约束等离子体,包括高β(p)模式和H模式放电。在最新的硼化处理中,分流板的一部分被B4C涂层砖替代,其B4C厚度类似于300微米。引入B4C偏滤器砖之后,观察到从砖中爆炸生成硼颗粒。由于硼化与十硼烷的结合以及从B4C砖中产生硼的综合作用,氧杂质非常低,以至于在最新的硼化之后氧线信号被降低到噪声水平。另一方面,硼从B4C砖中爆炸会限制JT-60U的运行。 [参考:14]

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