中文摘要：

在电子横梁照耀下面暴露的蠕虫状的 alpha 氧化铝重建的表面被一台扫描电子显微镜分别地在房间温度和 90 K 与 0.5 keV 横梁精力并且由一台发射度电子显微镜调查。在原处记录的结果证明重建的现在的 electron-beam-induced 表面是电子剂量和温度依赖者并且由体积形状变化伴随了。表面重建被一个钻腐烂过程，在表面，作文坚定被在艾尔 ₂ O ₃ 和由从体积的使放出的氧的铝的氧化。

英文摘要：

The surface reconstructing of vermicular alpha-alumina exposed under electron-beam irradiation was investigated by a scanning electron microscope with 0.5 keV beam energy and by a transmittance electron microscope at room temperature and 90 K, respectively. The in-situ recorded results showed that the present electron-beam-induced surface reconstructing was both electron dose and temperature dependent and accompanied by bulk shape change. The surface reconstruction was explained by an Auger decay process, in which surface composition constancy was proposed by the equilibrium between electron stmulated reduction of Al2O3 and oxidation of aluminum by desorbed oxygen from bulk.