X射线光电子能谱
方解石
劈理(地质)
光谱学
带隙
电子
解吸
材料科学
分析化学(期刊)
电子光谱学
单晶
化学
结晶学
矿物学
物理化学
吸附
物理
核磁共振
复合材料
断裂(地质)
光电子学
量子力学
色谱法
作者
Don Baer,David L. Blanchard
标识
DOI:10.1016/0169-4332(93)90365-i
摘要
The cleavage face of single-crystal calcite has been studied in vacuum using reflection electron energy-loss spectroscopy (REELS), X-ray photoelectron spectroscopy (XPS), and electron-stimulated desorption (ESD). XPS valence-band measurements and a REELS determination of the band gap were made for comparison with a density-functional-theory calculation of the electronic and structural properties of calcite; both measurements compare well to the theory. A flux of 200 V electrons was found to damage the calcite surface at exposures of ∼0.01 C/cm2 or greater. This damage narrowed the band gap at the surface and caused the emission of CO2.
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