BY AN UNBEATEN WAY Interactions of particles and γ-radiation with crystals and application of the crystal-diffraction methods in physics

Creation of the first in our country focusing crystal-diffraction Cauchois γ-spectrometer (GSK-1) in 1956 [1] by O.I.Sumbaev and P.I.Lukirski (1894-1954) gave rise to the Gatchina scientific school of the diffraction researches and application of the diffraction methods in very different fields of physics (P.I.Lukirski could not see the ready device unfortunately). The event had not passed unnoticed. On March 17, 1956 the Leningrad newspaper “Smena” published the article devoted to young scientist Oleg Sumbaev, who had just finished the hard work started with the academician P.I.Lukirski on creation of the spectrometer. The paper noticed that after that not only the USA but also the USSR would have such a crystal-diffraction technique.