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首页> 外文期刊>Applied Surface Science >Phase explosion in laser-pulsed metal films
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Phase explosion in laser-pulsed metal films

机译：激光脉冲金属膜的相爆炸

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摘要

Nickel, chromium, and germanium films were treated by nanosecond 7-30 J cm~(-2) laser pulses. The evaporation, comprising surface evaporation, normal boiling, and homogeneous nucleation of gas bubbles in the liquid metals were visualized by a highspeed transmission electron microscope on the nanosecond time scale. Contrary to phase explosion, the first two mechanisms are marginal at these fluences. Nucleation rates of gas bubbles were determined by imaging. Plasma temperatures were estimated from transient small angle scattering. The results can be used to check high-temperature material parameters.
机译：镍，铬和锗薄膜经过纳秒级7-30 J cm〜（-2）激光脉冲处理。通过纳秒级的高速透射电子显微镜可以观察到蒸发，包括表面蒸发，正常沸腾和液态金属中气泡的均匀成核。与相爆炸相反，前两种机制在这些通量下是微不足道的。通过成像确定气泡的成核率。从瞬态小角度散射估计血浆温度。结果可用于检查高温材料参数。

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