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Dielectric Absorption of Microwaves and Submillimeterwaves by Alcohols and Phenols in Dilute Solution Dielectric lossers of benzylaleohol, cyclohexanol, n-decanol, and diphenylcarbinol and also of phenol, p-cresol, 2,4,6-trimethylphenoI and diphenylether have been measured over the 1 to 300 GHz frequency band using aliphatic and aromatic solvents. In cyclohexane solutions, measurements have also been made at two frequencies in the sub-mm-wave range. From an analysis of the absorption curves a distribution of relaxation times is obtained in a first approximation. Comparing the results from 3 alcohols and 3 phenols, differences are found between the relaxation time of the hydroxyl group and the live time of hydrogen bonds to aromatic solvent molecules. More than one relaxation time is found in diphenylether and its absorption curve in cyclohexane has a slope steeper than a Debye curve in the sub-mm-wave region, which is discussed as inertial effect.

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Dielektrische Absorption von Alkoholen und Phenolen in verdünnter Lösung bei Mikro- und Sub-mm-Wellen / Dielectric Absorption of Microwaves and Submillimeterwaves by Alcohols and Phenols in Dilute Solution