Single-shot microscopic electron imaging of intense femtosecond laser-produced plasmas
Single-shot microscopic electron imaging of intense femtosecond laser-produced plasmas
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DOI：
10.1063/1.3514084
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发表时间：
2010-12-01
影响因子：
1.6
通讯作者：
Sakabe, Shuji
中科院分区：
文献类型：
--
作者：
Inoue, Shunsuke;Tokita, Shigeki;Sakabe, Shuji
介绍了一种简单的单次激发显微电子成像技术，用于研究飞秒强激光等离子体。通过为110 keV电子设计的永磁透镜，从由强度为3 × 10（16）W/cm（2）的0.8 mJ的单个激光脉冲产生的等离子体发射的热电子被成功地成像。分析这幅图像，我们发现电子是从直径为3 μ m的区域发射出来的。在10（18）W/cm（2）的较高激光强度下，在激光焦点内和附近观察到不同的结构;也就是说，电子从几个单独的点发射。这些结果表明，激光等离子体电子成像是很有希望的研究飞秒激光与高密度等离子体的相互作用。(C)2010年美国物理学会。[doi：10.1063/1.3514084]
A simple technique for single-shot microscopic electron imaging was demonstrated for the study of intense femtosecond laser-produced plasmas. Passed through a permanent magnet lens designed for 110-keV electrons, hot electrons emitted from the plasma produced by a single laser pulse of 0.8 mJ with intensity of 3 x 10(16) W/cm(2) were successfully imaged. Analyzing this image, we found that electrons were emitted from an area of 3 mu m in diameter. At higher laser intensity of 10(18) W/cm(2), distinct structures were observed in and near the focal spot of the laser; that is, the electrons were emitted from several separate spots. These results show that laser-plasma electron imaging is promising for studying the interactions of femtosecond lasers with high-density plasmas. (C) 2010 American Institute of Physics. [doi:10.1063/1.3514084]