RSS订阅二次电子
贡献者：fallenwind 浏览：9530次 创建时间：2009-08-30
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目录 [隐藏]
1 翻译
2 解释
二次电子-翻译
二次电子
Secondary electron
二次电子-解释
入射电子与样品核外电子碰撞，使样品表面的核外电子被激发出来的电子，是作为SEM的成像信号，代表样品表面的结构特点。
A secondary electron arises as a result of the interaction of a primary electron with a specimen. In principle the term refers to all electrons emitted from a specimen after it has been bombarded with primary electrons, X-rays or other radiation. In practice the phrase most commonly refers to low-energy electrons (kinetic energy less than 50eV) emitted from the specimen in a scanning electron microscope (SEM).
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