飞秒激光与固体靶相互作用中自生磁场的测量
Measurement of spontaneous magnetic field in the interactions of femtosecond laser with solid targets
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摘要: 利用OMA光学多道分析谱仪，分别在激光镜反方向和接近靶面法线方向测量了2倍频谐波的精细结构。在激光功率密度为5×1017 W/cm2的条件下，通过散射光2倍频谐波谱的精细结构，回推出激光与等离子体相互作用中产生的自生磁场达100T量级。Abstract: The experiment measured the fine spectrum structure of 2 doubling harmonic at near normal direction of target and reflection direction of laser wave, employing OMA optical multi-channel spectrometer. Under the intensity of 5×1017W/cm2, the result of measurement indicates that spontaneous magnetic field was up to 102T level by analyzing the fine structure of 2 doubling harmonics in laser-plasma interaction.
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