Lithium-based surfaces controlling fusion plasma behavior at the plasma-material interfacea)
Lithium-based surfaces controlling fusion plasma behavior at the plasma-material interfacea)
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DOI：
10.1063/1.4719688
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发表时间：
2012-05
影响因子：
2.2
通讯作者：
J. Allain;C. Taylor
中科院分区：
文献类型：
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作者：
J. Allain;C. Taylor
等离子体-材料界面及其对磁约束热核聚变等离子体性能的影响被认为是实现核聚变发电的关键科学空白之一。在该界面处，来自聚变等离子体的高粒子和热通量会限制材料的寿命和可靠性，并因此阻碍聚变装置的操作。锂基表面现在被用于主要的磁约束聚变装置中，并且已经观察到对等离子体性能的深远影响，包括增强约束、抑制和控制边缘局域模（ELM）、降低氢再循环和杂质抑制。锂中氘和氦粒子相互作用的临界空间尺度长度在5-100 nm之间，取决于边缘处的入射粒子能量和磁配置。锂基表面的范围也从液态到各种基底上的固体锂涂层（例如，石墨、不锈钢、耐火材料等
The plasma-material interface and its impact on the performance of magnetically confined thermonuclear fusion plasmas are considered to be one of the key scientific gaps in the realization of nuclear fusion power. At this interface, high particle and heat flux from the fusion plasma can limit the material’s lifetime and reliability and therefore hinder operation of the fusion device. Lithium-based surfaces are now being used in major magnetic confinement fusion devices and have observed profound effects on plasma performance including enhanced confinement, suppression and control of edge localized modes (ELM), lower hydrogen recycling and impurity suppression. The critical spatial scale length of deuterium and helium particle interactions in lithium ranges between 5–100 nm depending on the incident particle energies at the edge and magnetic configuration. Lithium-based surfaces also range from liquid state to solid lithium coatings on a variety of substrates (e.g., graphite, stainless steel, refractory me...