High field dielectric measurements in water
- 1 January 1975
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 2: Molecular and Chemical Physics
- Vol. 71, 269-274
- https://doi.org/10.1039/f29757100269
Abstract
High field dielectric measurements of the “Piekara factor” have been carried out for pure water at 293 K. The measurements have been made possible by the development of a new technique capable of measuring permittivity changes Δε/ε as low as 10–5 in samples with conductivities as high as 10–2Ω–1 m–1. Reproducible results with water having conductivities in the range 1 to 4 × 10–5Ω–1 m–1 gave Δε/E2=–(1.00 ± 0.15)× 10–15 m2 V–2. The results are interpreted in terms of the low field dipole polarization factor Rp and the non-linear field effect correlation factor RS. The behaviour is that of the “classical” non-linear effect of a negative Δε due to permanent dipoles.Keywords
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