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Sub-millimetre Wave Spectra of Non-polar Liquids and Crystals

Naturevolume 214pages163165 (1967) | Download Citation



IN a previous publication, the sub-millimetre wave spectra of polar liquids—and in particular chlorobenzene—were discussed1. It was shown that in addition to the Debye absorption process at very low frequencies (<10 cm−1) there existed a more intense absorption at frequencies characteristically in the range 20–100 cm−1. This absorption, which was in the form of a very broad (half width ≈ 40 cm−1) band with peak heights in the range 10–30 nepers/cm, was attributed to vibrational motion of the disordered lattice, that is, to “liquid lattice absorption”. Since then other work at the National Physical Laboratory and elsewhere (ref. 2 and Genzel, L., personal communication) has shown that absorption bands of this type are a general feature of the sub-millimetre wave spectra of polar liquids.

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    Chantry, G. W., and Gebbie, H. A., Nature, 208, 378 (1965).

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    Hill, N., Proc. Phys. Soc., 82, 723 (1963).

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  1. Advanced Instrumentation Unit, National Physical Laboratory, Teddington, Middlesex

    • G. W. CHANTRY
    •  & H. A. GEBBIE
  2. Laboratoire de Chimie-physique, Faculté des Sciences, Paris

    • B. LASSIER
  3. Department of Natural Philosophy, University of Glasgow

    • G. WYLLIE


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