Abstract

A vacancy has been formed in a crystal lattice by removing an iodine anion from the crystallographic layer nearest to the surface on the basal face of the β-modification of silver iodide. The Monte Carlo method has been employed to study the molecular structure of condensed water phase nuclei growing in the field of the vacancy from a vapor at 260 K. The images and spatial correlation functions obtained for the nuclei in the region of the surface defect have indicated a relatively deep penetration of water molecules into the first crystallographic layers and the rupture of hydrogen bonds between the first adsorbed molecules. The growth of a nucleus in the vacancy field initially develops in the form of molecular chains extended in the direction outward the crystal surface; then, it continues in the form a monomolecular film spot spreading over the surface around the vacancy, with the mechanism of spot retention being the same as that on a defectless surface. The nuclei in the vacancy field are represented by monomolecular film spots with vertical protuberance-like prominences raised over them.

中文翻译：

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晶体衬底表面空位场中的凝结水相核。

摘要

通过从最靠近碘化银的β-修饰的基面上的表面的晶体层中除去碘阴离子，在晶格中形成了空位。蒙特卡罗方法已被用来研究在260 K的蒸汽中空位场中生长的凝结水相核的分子结构。表面缺陷区域中的核所获得的图像和空间相关函数表明水分子相对较深地渗透到第一晶体层中，并且第一吸附分子之间的氢键断裂。空域中核的生长最初以分子链的形式发展，该分子链沿晶体表面向外的方向延伸。然后，它以单分子薄膜斑点的形式继续在空位周围的表面上扩散，斑点保留的机理与无缺陷表面上的斑点保留机理相同。空位场中的核由单分子膜斑点代表，其上方突出有垂直突起状的突起。