Hot electron spatial distribution under presence of laser light self-focusing in over-dense plasmas
Hot electron spatial distribution under presence of laser light self-focusing in over-dense plasmas
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DOI：
10.1088/1742-6596/112/2/022095
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发表时间：
2008-05
期刊：
影响因子：
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通讯作者：
T. Tanimoto;A. Lei;T. Yabuuchi;H. Habara;K. Kondo;R. Kodama;K. Mima;K. Tanaka
中科院分区：
文献类型：
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作者：
T. Tanimoto;A. Lei;T. Yabuuchi;H. Habara;K. Kondo;R. Kodama;K. Mima;K. Tanaka
在激光热核聚变快速点火中，超强激光脉冲辐照内爆等离子体，利用激光与等离子体相互作用产生的超热电子快速加热高密度堆芯。UIL脉冲需要通过激光自聚焦形成等离子体通道，并通过电晕等离子体传播以到达足够近的核心。热电子用于加热核心。因此，研究激光在高密度等离子体中的传输和超热电子的空间分布是研究该方案可行性的重要课题。利用自聚焦技术测量了激光在高密度等离子体中传播时超热电子的空间分布。
In fast ignition for laser thermonuclear fusion, an ultra intense laser (UIL) pulse irradiates an imploded plasma in order to fast-heat a high-density core with hot electrons generated in laser-plasma interactions. An UIL pulse needs to make plasma channel via laser self-focusing and to propagate through the corona plasma to reach close enough to the core. Hot electrons are used for heating the core. Therefore the propagation of laser light in the high-density plasma region and spatial distribution of hot electron are important in issues in order to study the feasibility of this scheme. We measure the spatial distribution of hot electron when the laser light propagates into the high-density plasma region by self-focusing.