Setup for precision optical studies of supercritical fluids in a wide temperature range at high pressures up to 1 GPa.

A setup with a working volume of more than 10 mm has been fabricated to experimentally study the optical properties of gases, liquids, and solutions in a wide range of temperature (from 200 to 500 K) at hydrostatic pressures up to 1 GPa. The experimental parameters can be maintained with an accuracy of 0.1 K and 1.