Metals of such groups as, in particular: Au, Ag, Cu, Pb, Sn, Al - were used in pure form with a minimum % of impurities. The experiment was conducted on each of the above metal samples separately.
The metal is processed in the form of a plate with a thickness of 0.5 mm to 20 mm. The surface is brought by processing to the maximum reflectivity. Further, a sample of intrusive rock (granites) with a dominant part of biotite inclusions: K (Mg, Fe) 3 [Si3AlO10] [OH, F] 2 and K [Al Si3O8] - Na [Al Si3O8] - Ca [Al 2Si2O8], mineral composition: Pl + Q + Bi, is processed in the form of tiles with a thickness of 10 mm and is polished without the use of various polishing mixtures. A metal plate is fixed on this granite base in such a way that it is possible to install a radiographic film between them, according to the type of "cassette". The radiographic film at this moment should be in the light of the insulating material, at the very moment of exposure and until the development. The parameters of the metal plate and the granite substrate were selected according to the size of the radiographic film and amounted to 30 × 40 mm. The radiographic film used in this experiment is high contrast, the sensitivity class of the film according to ISO 5799 is group D, the sensitivity range according to ISO 5799 corresponding to group D is from 14.0 to 28.0. The radiation quality for this film corresponds to the radiation reproducibility conditions according to ISO 4037. This device is installed on the surface of the earth in such a way that the Sun relative to this plane is at an angle of 90⁰ or 45⁰. The height of the installation above the ground varies from 10 cm to 2 m, the minimum exposure time is 60 seconds.
Method 1. 1
In the second case, the thin metal plate was replaced with a matte quartz glass with an external coating. The thickness of quartz glass is 10 mm. Metal spraying of the base is made by one of the elements described in the first method (Au, Ag, Cu, Pb, Sn, Al). The thickness of the metal spraying was 40 μm.