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获得能量增益实现点火是目前激光惯性约束聚变领域研究的主要方向和标志性成果.在点火靶的设计中有多种可能的候选靶丸,包括碳氢掺杂锗、铍掺杂铜、聚酰亚胺、碳化硼和金刚石靶丸,其中碳氢和铍靶丸是最主要的候选靶丸.文中主要总结了几种候选靶丸的优缺点及目前研制现状.在国外,碳氢靶丸是目前点火靶的首选靶丸.与铍靶丸相比,不存在明显的微结构缺陷,制备较容易;靶丸光学透明,适宜于燃料分层和表征;靶丸在制备上更容易达到点火靶要求.美国的碳氢点火靶靶丸基本达到了设计要求,这些要求包括几何尺寸、壳层密度、壳层缺陷、表面光洁度、掺杂水平和杂质含量等.我国的点火靶靶丸研究还处在起步阶段.
To obtain the energy gain to achieve ignition is the main direction and landmark achievement in the field of laser inertial confinement fusion, there are many possible candidate targets in the design of the ignition target, including germanium doped with hydrogen, beryllium doped copper, Imine, boron carbide and diamond target pellets, of which hydrocarbon and beryllium target pellets are the most important candidate pellets.This paper mainly summarizes the advantages and disadvantages of several candidate pellets and the current research status.In the foreign countries, the hydrocarbon pellets are At present, the target of ignition target is the target of choice.Compared with the beryllium target, there is no obvious microstructure defects and the preparation is easier; the target is optically transparent and suitable for fuel stratification and characterization; the target is easier to reach the ignition target Requirements of the United States, the target of hydrocarbon ignition target basically reached the design requirements, these requirements include the geometry, shell density, shell defects, surface finish, doping level and impurity content, In the initial stage.