Photoacoustic Effects on Material-coated window = Photoacoustic Effects on Material-coated Window

다국어 초록 (Multilingual Abstract)

Photoacoustic effect was studied with the air cell and tungsten lamp. The air cell had a material-coated window. As the coating material, one of the following materials was used; the lamp black, copper, nickel and aluminum.
The incident light was chopped by the rotating disc, and entered through the material-coated window. The produced photoacoustic signal intensity is approximately inversely proportional to the chopping frequency. This effect was the same as that when the chopped light entered into the air cell from the opposite side, gas side. The signal intensity, however, was much smaller than that of tho light incident from the oppsite side.
The photoacoustic signal intensity was varied with the thickness and kinds of coated material. In the case of aluminum the intensity was rapidly decreased when thickness increased. In the case of copper, however, the intensity was increased until the thickness increased to a certain value, and over this value the intensity was decreased slowly.

목차 (Table of Contents)

• Ⅰ. 緖論
• Ⅱ. 理論
• Ⅲ. Special cases
• 1. Optically transparent solids
• 2. Optically opaque solids
• Ⅳ. 實驗
• Ⅴ. 實驗結果 및 考察
• Ⅵ. 結論