偏光解析法による水分子吸着量変化の測定 [in Japanese] Measurement of Variations in Water Adsorption by the Ellipsometry [in Japanese]
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In order to improve the stability of mass standards, it is necessary to estimate the amount of the water adsorption on the surface of a weight. In this report the physical adsorption of water molecules on a stainless steel weight was measured using an ellipsometer. The variations in the physical adsorption was determined to be in the range from 0.022μg/cm<SUP>2</SUP> to 0.036μg/cm<SUP>2</SUP> for the change in the relative humidity from 0.8% to 45%. The sensitivity used for this calculation was estimated using a five-medium model consisting of air, water adsorption layer, oxide layer, surface roughness, and substrate.
Shinku 45(3), 289-292, 2002-03-20
The Vacuum Society of Japan