Sub-millimetre Wave Spectra of Polar Liquids

Abstract

IN an earlier communication¹, it was reported that liquid phase absorption of the monohalogenated benzenes at a frequency ≈ 10¹² c/s (1 teracycle) was higher than would be expected from the assumption that a simple Debye process was operative. The measurements supporting this conclusion were made using a CN maser source which gives only the single frequency 29.715 cm⁻¹ (337µ wave-length). We have now supplemented these observations by wide-band spectral investigations using Fourier transform interferometric techniques.