Relativistic laser channeling in plasmas for fast ignition
Relativistic laser channeling in plasmas for fast ignition
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DOI：
10.1103/physreve.76.066403
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发表时间：
2007-12-01
影响因子：
2.4
通讯作者：
Tanaka, K. A.
中科院分区：
文献类型：
--
作者：
Lei, A. L.;Pukhov, A.;Tanaka, K. A.
我们报告了一个实验观察表明等离子体通道的形成通过聚焦相对论激光脉冲到一个长尺度长度的预制等离子体。通道方向与激光轴一致。激光透过率的测量表明，激光在高密度等离子体中发生了相对论自聚焦沟道。三维粒子模拟再现了等离子体通道，并揭示了准直热电子束产生沿着激光轴在激光沟道。这些发现为用相对论激光脉冲快速加热稠密燃料等离子体提供了可能性。
We report an experimental observation suggesting plasma channel formation by focusing a relativistic laser pulse into a long-scale-length preformed plasma. The channel direction coincides with the laser axis. Laser light transmittance measurement indicates laser channeling into the high-density plasma with relativistic self-focusing. A three-dimensional particle-in-cell simulation reproduces the plasma channel and reveals that the collimated hot-electron beam is generated along the laser axis in the laser channeling. These findings hold the promising possibility of fast heating a dense fuel plasma with a relativistic laser pulse.