Measuring the mutual diffusion coefficient of heavy water in normal water using a double liquid-core cylindrical lens.

ABSTRACT: The mutual diffusion coefficient of heavy water in normal water is measured over a temperature range of 20 to 40 °C using a novel method called the shift of equivalent refractive index slice (SERIS). The measured values range from 1.9086 × 10^-5 to 3.0860 × 10^-5 cm²/s and fit the Arrhenius equation well, and the calculated data from the equation are consistent with the literature values obtained by the interference method. The SERIS method is based on a double liquid-core cylindrical lens (DLCL); the front liquid core of the DLCL is used as both a liquid diffusion cell and a key imaging lens, and the resolvable minimum of liquid refractive index is δn = 6.15 × 10^-5. The rear liquid core is used as an aplanatic lens, and the transversal spherical a

SUBMITTER: Meng W 

PROVIDER: S-EPMC6105602 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature