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microsensor木蟲(chóng) (小有名氣)
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[交流]
初次求助,翻譯一句話(材料物理類(lèi)),謝謝
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| 在理想完美的固體中,聲子的傳播形式是不衰減的平面波,即聲子的相關(guān)長(zhǎng)度不受制約,表現(xiàn)為拉曼散射中的動(dòng)量守恒情況,只有在布里淵區(qū)中心的聲子才能被激,對(duì)于單晶硅在室溫下第一階拉曼峰位于 525cm-1,其半高寬約為2.25cm-1,二階散射峰在970cm-1附近。 |
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In an ideal perfect solid, the phonon propagated by an unattenuated plane wave。 that is to say, the phonon correlation length is not restricted, the performance registers as momentum conservation in the Raman scattering, and the phonon can be excited only in the Brillouin zone center。At room temperature,the first-order Raman peak of monocrystalline silicon is at 525cm-1,which its half-width is 2.25cm-1, and its second-order one is near 970cm-1 有誤之處請(qǐng)指正,別笑話哈 |
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