对ICF中三个候选黑腔的审查
Review of the three candidate hohlraums in ICF
摘要：
本文主要从理论方面对惯性约束聚变（ICF）中的圆柱形、八面体形和六柱孔形三种黑腔结构进行了综述。每个黑腔都有自己的优点和缺点。虽然由于一些非理想因素，圆柱形黑腔存在驱动不对称的问题，但如果将来能在美国国家点火装置（NIF）之外获得更多的激光能量，点火成功仍然是可能的。八面体黑腔可以提供高对称性的束流。然而，八面体黑腔由于其内部复杂的三维等离子体条件而存在一些问题。目前还没有一种八面体空腔靶设计能同时解决所有问题。六柱孔黑腔在一定程度上综合了圆柱孔和八面体孔黑腔理论上的优点。介绍了一种性能良好的六端口圆柱形黑腔靶的设计方案，该方案平衡了激光能量、驱动对称性和激光等离子体相互作用等关键问题。
英文摘要：
In this paper, we give a review of three hohlraum geometries, including cylindrical, octahedral and six-cylinder-port hohlraums, in inertial confinement fusion (ICF) mainly from theoretical side. Every hohlraum has its own strengths and weaknesses. Although there is a problem of drive asymmetry in the cylindrical hohlraums due to some non-ideal factors, the success of ignition is still possible if more laser energy is available beyond the US National Ignition Facility (NIF) in the future. Octahedral hohlraums can provide the high symmetry flux on capsule. However, octahedral hohlraums suffer from several problems due to the complicated three-dimensional plasma conditions inside. And up to now, there is no one target design with the octahedral hohlraums in which each problem can be solved at the same time. Six-cylinder-port hohlraums combine the merits in theory of both cylindrical and octahedral hohlraums to a certain extent. We introduce a target design with good performance by using the six-cylinder-port hohlraums, in which the key issues of concern, such as laser energy, drive symmetry, and laser plasma interaction (LPI), etc, are all balanced.
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