强激光与粒子束, 2013, 25 (9): 2303, 网络出版: 2013-08-28   

神光Ⅱ装置直接驱动柱形靶压缩

Directdrive cylindrical target compression at ShenguangⅡ laser facility
作者单位
中国工程物理研究院 上海激光等离子体研究所, 上海 201800
摘要
在神光Ⅱ激光装置上,针对外径260 μm的柱形靶,采用大焦斑拼接的办法(焦斑直径约200 μm),开展了八路激光直接驱动压缩实验。利用第九路激光驱动钼X射线背光,使用KirkpatrickBaez显微镜成像以及条纹相机记录的方法,获得了柱形靶内爆流线图,据此给出的压缩后密度约为初始密度的120倍。该密度处于快点火电子产生区和能量沉积区密度之间,正是电子束需要传输的密度区域。神光Ⅱ皮秒激光运行后,可以利用这种压缩的柱形靶开展电子束在稠密等离子体中传输的实验研究。
Abstract
An experiment of directdrive cylindrical target compression is carried out using the eight laser beams of ShenguangⅡ laser facility with the spots defocused to 200 μm. A clear flow diagram of cylindrical target implosion is obtained with Mo backlight driven by the 9th laser beam and KirkpatrickBaez microscopy. Experimental result shows that, for the cylindrical target with an outer diameter of 260 μm, a compressed density of up to 120 times the initial density is obtained, which is between the densities of electron production area and energy deposition area. Experiments of electron beam transport and energy deposition in this compressed cylindrical target could be carried out once the ShenguangⅡ ps laser beam is available.
参考文献

[1] Tabak M, Hammer J, Glinsky M E, et al. Ignition and high gain with ultrapowerful lasers[J]. Phys Plasmas, 1994, 1(5): 1626-1634.

[2] Kodama R, Norreys P A, Mima K, et al. Fast heating of ultrahighdensity plasma as a step towards laser fusion ignition[J]. Nature, 2001, 412: 798-802.

[3] Kodama R, Shiraga H, Shigemori K, et al. Nuclear fusion: Fast heating scalable to laser fusion ignition[J]. Nature, 2002, 418: 933-934.

[4] Koga M, Arikawa Y, Azechi H, et al. Present states and future prospect of fast ignition realization experiment (FIREX) with Gekko and LFEX Lasers at ILE[J]. Nuc Instrum Meth A, 2011, 653(1): 84-88.

[5] Theobald W, Solodov A A, Stoeckl C, et al. Initial coneinshell fastignition experiments on OMEGA[J]. Phys Plasmas, 2011, 18: 056305.

[6] Shiraga H, Fujioka S, Nakai M, et al. Integrated experiments of fast ignition targets by GekkoXII and LFEX lasers[J]. High Energy Dens Phys, 2012, 8(3): 227-230.

[7] Cai H B, Mima K, Sunahara A, et al. Prepulse effects on the generation of high energy electrons in fast ignition scheme[J]. Phys Plasmas, 2010, 17: 023106.

[8] Zhou C T, He X T, Chew L Y. Intense shortpulse lasers irradiating wire and hollow plasma fibers[J]. Opt Lett, 2011, 36(6): 924-926.

[9] Akli K U, Stephens R B, Key M H, et al. Hot electron generation and transport using Kα emission[J]. J Phys: Conf Ser, 2010, 244: 022026.

[10] Vauzour B, Pérez F, Volpe L, et al. Laserdriven cylindrical compression of targets for fast electron transport study in warm and dense plasmas[J]. Phys Plasmas, 2011, 18: 043108.

[11] Solodov A A, Anderson K S, Betti R, et al. Integrated simulations of implosion, electron transport, and heating for directdrive fastignition targets[J]. Phys Plasmas, 2009, 16: 056309.

[12] 王瑞荣, 肖沙里, 钱家渝, 等. 高分辨椭圆弯晶谱仪在激光等离子体实验中的应用[J]. 强激光与粒子束, 2007, 19(7): 1163-1166.(Wang Ruirong, Xiao Shali, Qian Jiayu, et al. Application of highresolution elliptical crystal Xray spectrometer to laserproduced plasma experiment. High Power Laser and Particle Beams, 2007, 19(7): 1163-1166)

[13] 穆宝忠, 伊圣振, 黄圣铃, 等. ICF用KirkpatrickBaez型显微镜光学设计[J]. 强激光与粒子束, 2008, 20(3): 409-412.(Mu Baozhong, Yi Shengzhen, Huang Shengling, et al. Optical design of KirkpatrickBaez microscope for ICF. High Power Laser and Particle Beams, 2008, 20(3): 409-412)

[14] Ramis R, Schmaiz R, MeyerterVehn J. MULTIA computer code for onedimensional multigroup radiation hydrodynamics[J]. Computer Physics Communications, 1988, 49(3): 475-505.

[15] 方智恒, 张梦洁, 王伟, 等. 激光脉冲波形优化与材料压缩特性[J]. 强激光与粒子束, 2009, 21(6): 859-862.(Fang Zhiheng, Zhang Mengjie, Wang Wei, et al. Laser pulse shape optimization for flat target compression. High Power Laser and Particle Beams, 2009, 21(6): 859-862)

[16] 方智恒, 王伟, 贾果, 等. 高温烧蚀初始印记及其瑞利泰勒不稳定性发展的研究[J]. 物理学报, 2009, 58(10): 7057-7061.(Fang Zhiheng, Wang Wei, Jia Guo, et al. Imprinting and consequent RayleighTaylor growth. Acta Physica Sinica, 2009, 58(10): 7057-7061)

王伟, 方智恒, 贾果, 王瑞荣, 安红海, 谢志勇, 叶君建, 周华珍, 王琛, 吴江, 雷安乐, 傅思祖. 神光Ⅱ装置直接驱动柱形靶压缩[J]. 强激光与粒子束, 2013, 25(9): 2303. Wang Wei, Fang Zhiheng, Jia Guo, Wang Ruirong, An Honghai, Xie Zhiyong, Ye Junjian, Zhou Huazhen, Wang Chen, Wu Jiang, Lei Anle, Fu Sizu. Directdrive cylindrical target compression at ShenguangⅡ laser facility[J]. High Power Laser and Particle Beams, 2013, 25(9): 2303.

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