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阿秒条纹相机
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阿秒条纹相机
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attosecond streak camera
阿秒条纹相机
物质相互作用的很多基本物理过程都发生在可见光周期量级或更短的时间,如处于基态的电子在玻尔轨道上绕原子核运动一周的时间为150as(1as=10-18s),氮原子中从2p轨道发射出的电子波包比从2s轨道发射出的电子波包延迟20as等。为了探测这些过程,需要脉宽更短的阿秒量级的“光探针”,进而就需要发展阿秒量级的测量技术。21世纪初,超短激光脉冲的宽度达到阿秒量级,使得超快诊断的时间分辨率进入阿秒范畴成为可能,即阿秒条纹相机。
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pressure filtration of mineral processing products
pressure fluctuation of water turbine
pressure fluctuation test in wind tunnel
pressure formula
pressure function
pressure-gas-type load switch
pressure gradient
pressure gradient correction factor
pressure gradient drift
pressure gradient force
pressure group
pressure history
pressure holding accident of oil and gas pipeline
pressure-induced band
pressure-induced crystallization
pressure-induced magnetic phase transition
pressure-induced phase transition
pressure-induced soft mode phase transition
pressure-induced spectrum
pressure-induced structral phase transtion
pressure-induced superconducting phase transition
pressure inflow condition
pressure ionization
pressure jump
pressure leach
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