Reduction of the Rayleigh-Taylor instability growth with cocktail color irradiation
Reduction of the Rayleigh-Taylor instability growth with cocktail color irradiation
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DOI：
10.1063/1.2817092
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发表时间：
2007-12
影响因子：
2.2
通讯作者：
K. Otani;K. Shigemori;T. Sakaiya;S. Fujioka;A. Sunahara;M. Nakai;H. Shiraga;H. Azechi;K. Mima
中科院分区：
文献类型：
--
作者：
K. Otani;K. Shigemori;T. Sakaiya;S. Fujioka;A. Sunahara;M. Nakai;H. Shiraga;H. Azechi;K. Mima
报道了一种减小惯性约束聚变(ICF)靶中瑞利-泰勒不稳定性(RTI)增长的新方法。众所周知，RTI潜在地阻止了ICF目标的高密度压缩。以前的研究[K.Shigemori等人，Phys.莱特牧师。78,250(1997)，S.G.Glendning等人，Phys.莱特牧师。78,3318(1997)和H.Azechi等人，Phys.等离子体4,4079(1997)]指出，非局域电子热传输增强了长波长激光辐照下RTI生长的烧蚀稳定效应。利用一小部分长波长激光(λ=0.5 3或1.0 5μm)和主驱动激光器(λ=0.35μm)进行了平面靶实验，验证了非局域电子热输运的作用。这种“鸡尾酒色”激光照射的RTI增长率明显低于“单色”短波长激光照射的RTI增长率。实验中的生长因子。
A novel method for reducing the Rayleigh-Taylor instability (RTI) growth in inertial confinement fusion (ICF) targets is reported. It is well known that high-density compression of ICF targets is potentially prevented by the RTI. Previous studies [K. Shigemori et al., Phys. Rev. Lett. 78, 250 (1997), S. G. Glendinning et al., Phys. Rev. Lett. 78, 3318 (1997), and H. Azechi et al., Phys. Plasmas 4, 4079 (1997)] have indicated that nonlocal electron heat transport enhances the effect on the ablative stabilization of the RTI growth with long wavelength laser irradiation. Planar target experiments, using a small fraction of a long wavelength laser (λ=0.53 or 1.05μm) in addition to the main drive laser (λ=0.35μm), were conducted to verify the RTI reduction by inducing the effect of the nonlocal electron heat transport. The measured RTI growth rate for this “cocktail-color” laser irradiation was clearly reduced from that for the “single-color” short-wavelength laser irradiation. The experimental growth factors ...