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本文研究了脉宽为200ps(FWHM),输出能量为0.1~4J,波长为1.06μm的激光束辐照Rh,Ag和Cu靶激光等离子体发射的自发电流.实验结果发现,激光辐照的焦斑中心位置,峰值电流密度高达107A/cm2。We studied a phenomena of spontaneous current generated from laser plasma, which was produced from several plane target made from Rh, Ag and Cu irradiated with high power laser light. The pulse-width, output energy and wavelength of the laser were 200 ps (FWHM), 0.1-4J and 1.06 μm. respectively. At the focus spot of the target irradiated with laser, a spontaneous current density as high as 107A/cm2 was found in the experiment.
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