赤外レーザー光音響分光法による金属板上有機薄膜の分析

概要

論文の詳細を見る
Infrared laser photoacoustic spectrometer with a tunable CO_2 laser and a piezoelectric ceramic detector (PZT) as major constituent elements was developed for the determination of thin organic coatings on metal substrate. Polyvinylacetate film on stainless steel plate was used as a sample and was directly attached to the PZT. Experimental factors which affected the photoacoustic(PA) signals were examined. In particular, the dependence of the PA signals on the incident angles of an excitation laser beam was investigated in detail. As a result, the PA signals were enhanced as the incident angles became larger when the laser beam was polarized parallel to the plane of incidence. In this case, maximum efficiency was obtained in the angular range of 70° to 80°. The dependence of the PA signals on the thickness of coatings was also examined, and a good linear relationship was obtained between them in the measured thickness range of 10 nm to 400 nm.
社団法人日本分析化学会の論文
1983-08-05