Preliminary results from recent experiments and future roadmap to Shock Ignition of Fusion Targets
Preliminary results from recent experiments and future roadmap to Shock Ignition of Fusion Targets
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最近实验的初步结果和聚变目标冲击点火的未来路线图
DOI：
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发表时间：
2012
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通讯作者：
T. Chodukowski
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作者：
D. Batani;G. Malka;G. Schurtz;X. Ribeyre;E. LeBel;L. Giuffrida;V. Tikhonchuk;L. Volpe;A. Patria;P. Koester;L. Labate;L. Gizzi;L. Antonelli;M. Richetta;J. Nejdl;M. Sawicka;D. Margarone;M. Krůs;E. Krousky;J. Skála;R. Dudzak;A. Velyhan;J. Ullshmied;O. Renner;M. Šmíd;O. Klimo;S. Atzeni;A. Marocchino;A. Schiavi;C. Spindloe;T. O'Dell;T. Vinci;J. Wołowski;J. Badziak;T. Pysarcizck;M. Rosiński;Z. Kalinowska;T. Chodukowski
冲击点火是惯性约束聚变的一种新方法，它将压缩和点火过程解耦。最后一种方法是在压缩结束时通过高强度激光尖峰（≤ 1016 W/cm ~ 2）发射强冲击波。本文首先描述了利用帕尔斯碘激光器在与SI相关的强度范围内研究激光-靶耦合和激光-等离子体相互作用的实验。第一束波长为λ = 1.33 μm，强度较低，用于产生扩展的预成型等离子体，第二束波长为λ = 0.44 μm，用于产生强冲击。几个诊断特征的预形成的等离子体和主脉冲的相互作用。推测压力高达90 Mbar。在本文的最后一篇文章中，我们讨论了相关的步骤，可以遵循，以接近像LMJ的激光设备上的演示SI。
Shock ignition (SI) is a new approach to Inertial Confinement Fusion (ICF) based on decoupling the compression and ignition phase. The last one relies on launching a strong shock through a high intensity laser spike (≤ 1016 W/cm2) at the end of compression. In this paper, first we described an experiment performed using the PALS iodine laser to study laser-target coupling and laser-plasma interaction in an intensity regime relevant for SI. A first beam with wavelength λ = 1.33 μm and low intensity was used to create an extended preformed plasma, and a second one with λ = 0.44 μm to create a strong shock. Several diagnostics characterized the preformed plasma and the interaction of the main pulse. Pressure up to 90 Mbar was inferred. In the last paper of the paper, we discuss the relevant steps, which can be followed in order to approach the demonstration of SI on laser facilities like LMJ.