Photo-Akustik-Spektroskopie an festen Stoffen |
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Authors: | Heinz -Helmut Perkampus |
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Institution: | 1. Institut für Physikalische Chemie, Lehrstuhl I der Universit?t, D-4000, Düsseldorf
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Abstract: | A short historic introduction into the subject and the basics of the generation of a photoacoustic signal with the emphasis upon the particularities of solid samples are given. The set-up of a two-beam photoacoustic spectrometer is described. For a better understanding of the investigations of solid samples the basic theory is presented. Specially treated subjects are: the saturation effect and how to overcome it; depth profiles of thin layers as a nondestructive method used in the investigation of a green leaf and a sheet of color reversal paper; the investigation of solid solutions in a polymer matrix with the determination of the thermic data of the matrix itself, and the fluorescence quantum yield of organic dyes solved therein. Finally a summary of numerous other applications of the PAS is given. |
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