On the use of KrF lasers for fast ignition
On the use of KrF lasers for fast ignition
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DOI：
10.1017/s026303460800061x
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发表时间：
2008-12-01
影响因子：
0.9
通讯作者：
Szatmari, S.
中科院分区：
文献类型：
--
作者：
Foldes, I. B.;Szatmari, S.
KrF激光器已被认为是替代二极管泵浦激光器的所有惯性聚变驱动器。KrF激光器用于快速点火的可能性是由其短波长和相应的较大穿透深度以及可能使用相同的放大器用于聚变驱动器和快速点火器来支持的。结果表明，在聚变试验设施的情况下，能量和强度的要求得到满足。使用20 ps KrF脉冲的快速点火器由于光束的相干性而在角度复用之后需要光束平滑技术。提出了一种多光束快速点火器作为替代方案，其中大量的1 ps持续时间的光束在偏振解复用后分别聚焦到燃料上。这种布置甚至允许点火器的脉冲形成。
The KrF laser has been considered as ail inertial fusion driver alternative to diode-pumped lasers. The possibilities of KrF lasers for fast, ignition is Supported by their short wavelength and the corresponding larger penetration depth together with the possible use of the same amplifiers for fusion driver and fast ignitor. It is shown that in the case of a fusion test facility both the energy and the intensity requirements call be fulfilled. A fast ignitor using 20 ps KrF pulses requires beam smoothing techniques after angular multiplexing due to the coherence of the beam. A multiple beam fast ignitor is suggested as ail alternative in which a high number of beams of 1 ps duration are separately focused oil the fuel after polarization demultiplexing. This arrangement allows even the pulse-forming of the ignitor.