Microwave dielectric constant measurements on lossy static and flowing liquids: B×v effects

摘要

A technique is described for the measurement of the refractive index n of static or flowing lossy polar liquids in the 10‐GHz region and in the presence of magnetic fields H. Measurements of n as a function of H were performed on static and flowing H2O containing various concentrations of ionic impurities. The application of H (up to 7300 Oe) to liquids flowing with velocities v (up to 200 cm/sec) yielded the following result: Δn ≤6×10-4 for all concentrations. This result indicates that Umanskii''s observed change in dielectric constant ϵ′ (roughly 100% change in ϵ′ for H = 1500 Oe and v = 50 cm/sec) is probably a spurious instrumental effect.