对H。Ruhl和G. Korn（Marvel Fusion，慕尼黑）
Comments to "High current ionic flows via ultra-fast lasers for fusion applications" by H. Ruhl and G. Korn (Marvel Fusion, Munich)
摘要：
我们评论Marvel Fusion的建议，即使用超短，强激光脉冲撞击纳米结构的目标，以产生热离子，最终目标是通过p-11B聚变反应产生能量。我们展示了如何对加热区域的线密度的最低要求，也出现了这样的计划，旨在点火或只是光束能量放大，这已经为D-T反应是禁止的，如果没有预压缩的目标是预见的。我们的结论是，先进的超短激光脉冲可以用于聚变应用，只有当聚变反应时间可以降低到足够短的值。这只能通过靶的强预压缩来实现，这似乎难以与纳米结构靶协调，特别是与支持者所示的燃料组件几何形状协调。
英文摘要：
We comment on Marvel Fusion's proposal to use ultra-short, intensive laser pulses impinging on nanostructured targets for the production of hot ions, with the ultimate aim of energy production through the p-11B fusion reaction. We show how a minimum requirement on the line density of the heated region arises also for such schemes aiming at ignition or just beam-energy amplification, which already for the D-T reaction are prohibitive if no pre-compression of the target is foreseen. We conclude that advanced ultra-short laser pulses can be of use for fusion applications only if the fusion reaction time can be brought down to sufficiently short values. This can happen only via strong pre-compression of the target, which appears difficult to reconcile with a nanostructured target and in particular with the fuel assembly geometries shown by the proponents.
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