Search academic texts

Information × Registration Number 0217U001254, 0115U000474 , R & D reports Title Structural effects in strong and electromagnetic interactions and feature of radiation effects on nanostructures popup.stage_title Head Girka Igor Oleksandrovych, Registration Date 01-02-2017 Organization Kharkov National University named after V.N. Karazin popup.description2 A new method allowing to decrease background and improve sensitivity of the counting experiments on search of Solar hadronic axions based on resonance absorption by 83Kr nuclei is developed. It is shown that the necessary condition of further improving of the sensitivity of such low-background experiments is the use of the krypton rectified of kosmogenic isotope 81Kr and creation of additional protection of the central counter against the background radiations by using the copper cage of the gas proportional chamber. The search results of the hadron axion presented in this work are now the closest to the theoretical prediction. A significance of these results is defined by the possibility of their use for the solution of the key problem of a nuclear and elementary particle physics - the CP-invariance of strong interactions. New experimental data were collected and conclusions are drawn on the relation of radiation transformations in aluminosilicates nanomaterials with variations of their functional characteristics. Novelty of these data is based on results of series of experiments using the bremsstrahlung radiation on a linear electron accelerator, and also the nuclear and radiometric methods of the quantitative definition of adsorption characteristics. These results are important for the further study of mechanisms of radioactive effects in materials for the targeted modification of their properties. The obtained results have also the perspective of application in applied tasks, the related to the identification and the analysis of small concentrations of radionuclides and the monitoring of streams of thermal neutrons, as well as with creation of efficient absorbers of the most dangerous radionuclide's. Product Description popup.authors І. Федорець Г. Гах Г. Онищенко Л. Савчук М. Дикий М. Шульга Н. Луцай Н. Хлапова О. Заславський О. Мєдвєдєва С. Панасенко С. Раткевич popup.nrat_date 2020-04-02 Close