Laser light and hot electron micro focusing using a conical target
Laser light and hot electron micro focusing using a conical target
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DOI：
10.1063/1.1735734
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发表时间：
2004-05
影响因子：
2.2
通讯作者：
Y. Sentoku;K. Mima;H. Ruhl;Y. Toyama;R. Kodama;T. Cowan
中科院分区：
文献类型：
--
作者：
Y. Sentoku;K. Mima;H. Ruhl;Y. Toyama;R. Kodama;T. Cowan
采用三维粒子模拟方法研究了激光在锥形靶内的传输。结果表明，激光在圆锥靶内被光学引导，并聚焦在圆锥的尖端。在几微米的焦斑中，强度增加到几十倍。这是会聚的热电子的头部的锥，观察到的结果，由自生准静态磁场和静电鞘场引导的表面电子流。结果，尖端处的热电子密度局部地比使用正常平坦箔的情况大十倍。
The laser light propagation inside the conical target had been studied by three-dimensional particle-in-cell simulations. It is found that the laser light is optically guided inside the conical target and focused at the tip of the cone. The intensity increases up to several tens of times in a several micron focal spot. It is the convergence of hot electrons to the head of the cone that is observed as a consequence of the surface electron flow guided by self-generated quasistatic magnetic fields and electrostatic sheath fields. As a result, the hot electron density at the tip is locally ten times greater than the case of using a normal flat foil.