Transport and effects of ferromagnetic dust in a tokamak with a metallic vessel
Transport and effects of ferromagnetic dust in a tokamak with a metallic vessel
复制标题
金属容器托卡马克中铁磁尘埃的传输和影响
DOI：
--
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
L. Vignitchouk
中科院分区：
文献类型：
--
作者：
E. Lazzaro;I. Proverbio;F. Nespoli;S. Ratynskaia;C. Castaldo;U. Deangelis;M. Deangeli;Jean;L. Vignitchouk
在当代和未来的磁聚变实验装置中，重要的物理效应取决于与复合等离子体的界面，复合等离子体由多个离子物种和具有可变电荷的异质尘埃组成。介绍了一系列与尘埃有关和发生在现有托卡马克中的过程，重点介绍了在具有圆形子午线截面的金属容器的托卡马克溶胶中孤立的微米铁磁尘埃粒子的物理新结果。特别是这种粒子，除了通常的作用力外，还会受到与周围磁场的磁偶极相互作用，并在高表面温度下受到强烈的蒸发效应。此外，容器几何形状中包含间隙的初步结果表明存在捕尘的可能性。还报道了纳米粉尘对等离子体的影响，当粉尘被认为是等离子体组分时。
Important physics effects in contemporary and future devices for magnetic fusion experiments depend on the interface with a ‘composite’ plasma, consisting of multiple ion species and heterogeneous dust with variable charge. A selection of processes related to dust and occurring in existing tokamaks is presented, focusing on new results on the physics of isolated micrometric ferromagnetic dust particles in the SOL of a tokamak with a metallic vessel of circular meridian cross section. Such particles in particular, in addition to usual forces, are subjected to magnetic dipole interaction with the ambient magnetic field and to strong evaporation effects at high surface temperatures. Moreover, preliminary results of inclusion of gaps in the vessel geometry suggest the possibility of dust trapping. Also reported are the effects of nanometre dust on plasma when the dust is to be considered as a plasma component.