DEVICE FOR DETERMINING THE PARAMETERS OF THE EQUATION OF THE STATE OF THE SUBSTANCE, ISOENTROPICALLY COMPRESSED TO SUPER HIGH PRESSURES Russian patent published in 2018 - IPC B01J3/00 

FIELD: physics.

SUBSTANCE: invention relates to high-pressure physics, namely to an apparatus for determining the parameters of the equation of state of a substance isoentropically compressed to ultra-high pressures, and can be used to study the properties of substances with a small atomic number. Device comprises a cylindrical compression chamber, which is an assembly of coaxial cylindrical specimens, comprising a sample of the test substance and an outer cylindrical sample, which is an outer conductive shell made of a single layer and made of a material with a high electrical conductivity, having a thickness greater than that of the skin layer of the currents, flowing along the shell when it is compressed by the pressure of the magnetic field, inside which there is a pair of reference samples, made of a substance with a known equation of state, with thicknesses at least an order of magnitude greater than the error in determining the radii of reference samples, layers of high-density radiopaque material consisting of chemical elements with a large atomic number, having a thickness that is an order of magnitude smaller than the thickness of cylindrical assembly samples placed between the boundaries of cylindrical samples, and an axisymmetric pulsed external pressure source coaxially enclosing a cylindrical compression chamber disposed relative to the compression chamber at a distance, providing the possibility of compression of the sample under investigation by acting on the outer surface of the outer shell of the chamber of the external magnetic field pressure created by it.

EFFECT: invention makes it possible to carry out measurements with high accuracy of the parameters of the equation of state of matter.

3 cl, 2 dwg