Abstract
With a change in temperature, a-lactose monohydrate crystals undergo changes in the molecular structure due to dehydration and decay of intramolecular bonds. The transmission spectra of the pressed microcrystalline samples of a-lactose monohydrate were measured using terahertz pulsed spectroscopy in the temperature range of the existence of the solid phase 10 – 475 K. An analysis of the observed absorption lines using the classical oscillator model made it possible to reveal the complex temperature evolution of the eigenfreuencies of the resonances, as well as to determine the region of existence of response phase of a-lactose monohydrate. Data obtained can find practical application in various fields of terahertz optics, including pharmacology, food industry, analytical chemistry and biophotonics.
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