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一、大放异彩的X射线激光 自从1960年第一台激光器问世以来,科学家们一直在寻求能工作在X射线波段的激光器。根据现有的认识,X射线激光具有X射线源所没有的许多特点: 1.亮度(光子/脉冲/立体角)比同步辐射高,6个量级,比激光等离子体X射线源高4个量级。 2.单色性优于所有X射线源。 3.相干性可以用来产生原子尺度的全息图象。 4.高时间分辨率(10~(-12)s),可以用来观察1ps(10~(-12)s)内的原子距离的运动,可用于击波阵面运动的观测,位错运动的衍射实验。 5.用它来进行光刻,线宽可达20nm(10~(-9)m)。 6.用它的干涉效应,可以制成大面积的线宽和间隔小于100nm的光栅。
First, the brilliant X-ray laser Since the first laser in 1960, the scientists have been seeking to work in the X-ray laser band. Based on current knowledge, X-ray lasers have many features not found in X-ray sources: 1. Brightness (photons / pulse / solid angle) is 6 orders higher than synchrotron radiation and 4 higher than laser plasma X-ray sources Magnitude. Monochromaticity is better than all X-ray sources. 3. Coherence can be used to generate atomic scale holographic images. 4. High temporal resolution (10 ~ (-12) s), which can be used to observe the atomic distance movement in 1ps (10 ~ (-12) s), can be used for the observation of the wavefront movement, dislocation motion Diffraction experiment. 5. Use it for photolithography, line width up to 20nm (10 ~ (-9) m). 6. With its interference effect, it is possible to make a grating with a large area line width and spacing of less than 100 nm.