推动激光聚变点火实验研究和关键技术

The experimental research and key technologies to advance laser fusion ignition

2021年8月8日,国家点火装置(National Ignition Facility,NIF)上获得1.3 MJ能量产出,首次达到MJ量级。这一进展使激光聚变研究接近美国国家科学院和国家核安全管理局定义的点火门槛,极大地鼓舞了激光聚变领域的研究人员。此次实验取得的成果取决于过去几年整个NIF研究团队的努力,包括理论和数值模拟、诊断技术、制靶技术、黑腔、靶壳以及填充管相关技术。调研了NIF上聚变点火的发展进程,梳理了美国过去十年为推动惯性聚变研究发展在实验和相关技术方面所作的努力,以期对中国激光聚变研究提供参考。

at Aug.8,2021,the experiment at the National Ignition Facility(NIF)made a significant step toward ignition,achieving a yield of more than 1.3 megajoules(MJ).This advancement puts researchers at the threshold of fusion ignition,an important goal of NIF,and opens access to a new experimental regime.The record-setting experiment was the culmination of years of research and development in lasers,optics,diagnostics,target fabrication,experimental design,and computer modeling and simulation.In this article,we have investigated the development of fusion ignition in NIF,to provide the reference for Chinese laser fusion research.