Rosatom and the Russian Federal Nuclear Center — All-Russian Research Institute of Experimental Physics have patented a spherical device for studying the quasi-isentropic compressibility of condensed matter. The development is designed to investigate the behavior of materials at pressures in the terapascal range — millions of atmospheres, comparable to conditions inside planets.
The device is a multilayer sphere with an explosive charge and a two-stage metal shell. The cavity between the cascades is filled with gas at a pressure of 250 atmospheres. Inside the second cascade shell, a shell of the material under study is installed without a gap, the inner cavity of which is filled with gas at a pressure of less than 1 atmosphere. When the charge is detonated, the shock wave creates quasi-isentropic compression in the sample.
The technical result is obtaining data on the average density of compressed matter under extreme conditions. The development can be applied in fundamental physics, astrophysics, and materials science to verify models of matter states and create new materials. The patent has already been obtained.
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