Experimental Determination of Ruby Crystal Sizes Used as a Manometer in High Pressure Chambers

To measure the pressure in the experimental research high-pressure chamber, a ruby crystal was used, for which R2 is analytically described—the line of the luminescence spectrum with a confidence factor from 0.9905 to 0.9964, while it was experimentally established that the parameter of non-hydrostatic compression of ruby crystals, which is used as a pressure gauge, with a thickness of 3.0 mm at a temperature of 23 °C and pressure of 583,8 MPa has a value greater than 5 times the specified precision. The use of a ruby crystal with a thickness of 0.5 mm as a manometer makes it possible to obtain an accuracy of recording the pressure of ± 10 MPa.