Shlyakhov I. Application of detectors on the basis of the CdTe and CdZnTe semiconductor compounds in problems of analysis of gamma-sources

Object - methods and means of analyses of highly effective x- and -rays sources using semiconductor detectors based on compounds CdTe and CdZnTe. Aim - development of radiometric and spectrometric characteristics improvement methods of highly intensive x- and -rays detection devices; based on them creation of application conditions detection and research blocks in the real tasks of sources of x- and -rays characterization; development of method and equipment for space-energetic analyses of high-energetic braking rays stream. Methods - method of measurement of detectors' volt-ampere characteristics, that get exploited at various temperature and by x- and -rays effect of different intensity; method of semiconductor spectrometry of -rays sources with a wide range of characteristics including standard samples from the set of SSGR and radionuclide sources, worked on electrons accelerators in photonuclear reactions; method of hovered dose power measurement of electrons accelerator's braking rays at research of detectors based on CdTe (CdZnTe) radioactive durability; computer modeling for analyses and optimization of developed methods and devices. Theoretic and practical results - by theoretic and experimental research is solved an important scientific task of analyses methods development and highly energetic photon rays of different nature sources characteristics research execution, and is developed a method of photonuclear converter for highly energetic photons stream density distribution measurement. Scientific novelty - formulated are requirements to the spectrometer's electronic tract, based on which its optimization depending on detector's based on CdTe and CdZnTe electrophysical properties is executed; developed is method and executed are radiation trials of detectors with CdTe and CdZnTe using braking rays of high power; for the sources of braking rays with intensity of up to 10 KW/cm3 with the energetic spectrum upper border of up to 100MeV is developed a method and are demonstrated abilities of space-energetic characteristics. The results of research are used at execution of state budget scientific research by Scientific-research complex "Accelerator" of the National scientific center "Kharkov physical-technical institute) NSC KPTI and by Institute of solid physics and science of materials NSC KPTI, and also were used at development of radioactive waste products located in the Object "Shelter" of Chernobyl APS analyses methodologies.