The effect of gettering on the reflectivity of aluminium films
The effect of gettering on the reflectivity of aluminium films
复制标题
吸杂对铝膜反射率的影响
DOI：
10.1088/0508-3443/9/8/308
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发表时间：
1958
期刊：
影响因子：
--
通讯作者：
L. Holland
中科院分区：
文献类型：
--
作者：
L. Holland
Aluminium films evaporated on glass from a single vapour source are more optically absorbing at high angles of vapour incidence if the films are slowly deposited or prepared in a poor vacuum. The rise in the optical absorption with vapour incidence angle is attributed to the degree of gas contamination of the growing film increasing as the deposition becomes more oblique. Such an effect could arise from a greater ratio of the number of gas molecules to vapour atoms combining at the receiver in regions of low vapour intensity. The reflectivities of aluminium films prepared at different gas pressures and rates of deposition show qualitative agreement with the hypothesis when plotted as a function of vapour incidence angle. The simple theory advanced is not applicable at gas pressures above 1 μ mercury because the vapour atoms are scattered by gas molecules before striking the receiver.
