Abstract
Since 2015, X-ray diffraction studies at the Institute of Atomic Energy have been carried out on a modern Panalytical Empyrean X-ray diffractometer. Empyrean is a unique X-ray diffractometer with a vertically positioned high-resolution goniometer, which combines capabilities of a classic powder and research diffractometer. A number of works on budget programs, commercial and grant projects include x-ray structural studies. In each work, samples have typical features (geometric dimensions, thickness, radioactivity of the material, etc.), which should be taken into account when shooting diffraction patterns. It is important to ensure precision of diffraction patterns for several samples, simplicity of the sample preparation method, and acceptability to work from the point of view of radiation safety. To ensure the quality components of the diffraction patterns, as well as to save the life of the X-ray tube, it is necessary to strive to obtain the required information on the minimum number of diffraction patterns. The paper presents part of x-ray phase analysis method, which is successfully used in the study of structural and fuel materials.