Integrated implosion/heating studies for advanced fast ignition
Integrated implosion/heating studies for advanced fast ignition
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DOI：
10.1063/1.1688790
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发表时间：
2004-04
影响因子：
2.2
通讯作者：
P. Norreys;K. Lancaster;C. Murphy;H. Habara;S. Karsch;R. Clarke;J. Collier;R. Heathcote;C. Hemandez-Gomez;S. Hawkes;D. Neely;M. Hutchinson;R. Evans;M. Borghesi;L. Romagnani;M. Zepf;K. Akli;J. King;B. Zhang;R. Freeman;A. Mackinnon;S. Hatchett;P. Patel;R. Snavely;M. Key;A. Nikroo;R. Stephens;C. Stoeckl;K. Tanaka;T. Norimatsu;Y. Toyama;R. Kodama
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文献类型：
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作者：
P. Norreys;K. Lancaster;C. Murphy;H. Habara;S. Karsch;R. Clarke;J. Collier;R. Heathcote;C. Hemandez-Gomez;S. Hawkes;D. Neely;M. Hutchinson;R. Evans;M. Borghesi;L. Romagnani;M. Zepf;K. Akli;J. King;B. Zhang;R. Freeman;A. Mackinnon;S. Hatchett;P. Patel;R. Snavely;M. Key;A. Nikroo;R. Stephens;C. Stoeckl;K. Tanaka;T. Norimatsu;Y. Toyama;R. Kodama
卢瑟福阿普尔顿实验室已经进行了利用锥/壳几何形状研究内爆超快加热的综合实验。实验使用 VULCAN Nd:glass 激光器的 1054 nm、纳秒、0.9 kJ 输出来驱动 6 束立方对称的直径 486 μm、壁厚 6 μm 的铜掺杂氘化塑料 (CD) 壳。使用二维空间分辨 Ti-Kα X 射线照相术测量压缩等离子体的不透明度表明，在停滞时实现了 4 g cm−3 的密度和 40 mg cm−2 的面密度。 1 ps 和 10 ps 脉冲的加热上限是根据 Cu 掺杂剂的荧光产率推导出来的。数据表明，控制锥体内预形成的等离子体尺度长度对于有效耦合压缩等离子体是必要的。
Integrated experiments to investigate the ultrafast heating of implosions using cone/shell geometries have been performed at the Rutherford Appleton Laboratory. The experiments used the 1054 nm, nanosecond, 0.9 kJ output of the VULCAN Nd:glass laser to drive 486 μm diameter, 6 μm wall thickness Cu-doped deuterated plastic (CD) shells in 6-beam cubic symmetry. Measurements of the opacity of the compressed plasma using two-dimensional spatially resolved Ti-Kα x-ray radiography suggest that densities of 4 g cm−3 and areal densities of 40 mg cm−2 were achieved at stagnation. Upper limits on the heating with both 1 ps and 10 ps pulses were deduced from the fluorescent yield from the Cu dopant. The data suggest that control of the preformed plasma scale-length inside the cone is necessary for efficient coupling to the compressed plasma.