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A MICROPROCESSOR CONTROLLED PHOTOACOUSTIC SPECTROPHOTOMETER OF WIDE DYNAMIC RANGE AND HIGH PRECISION

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A microprocessor controlled photoacoustic spectrometer for extracavity measurements was developed and applied to the study of the dynamics of chemical relaxation. A quantitative interpretation not only of the photoacoustic signal but also of the behaviour of the resonance frequency and resonance halfwidth was achieved. All measurements were performed with a cylindrical resonator.

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RUPRECHT-KARLS-UNIVERSITAET HEIDELBERG
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