Didenko N. Development of normative parameters of protective material for safe work in conditions of ionizing radiation by numerical simulations

Object of research: development of regulatory parameters of protective material for the creation of personal protection for people working in ionizing radiation. The aim of the thesis is to develop a new protective material from ionizing radiation and to determine its legal capabilities to create protective clothing with the goal of providing safe jobs for people with a high level of ionizing radiation. Methods: theoretical and experimental. Theoretical studies based on the application of the theory of mathematical physics, the theory of atomic physics, mathematical methods of numerical simulation. To simulate the passage of neutrons through matter to study their radiation-protective properties, a stochastic method was chosen (Monte Carlo). The experimental study carried out an experiment to determine the process of passage through radiation-protective material and was carried out in specialized and accredited laboratories. Scientific novelty of the results. Analysis and synthesis of the data suggested that a new type of protective material and application of the numerical simulation method developed its regulatory parameters for creating personal protection for people working under ionizing radiation. Thus, the following research results were obtained: 1. For the first time, the use of a new protective material against ionizing radiation in the form of a layer of glass spheres of the desired thickness, obtained a formula of their bulk density, which will determine the degree theoretically to reduce the energy of gamma rays. 2. The complete linear attenuation of gamma quanta, proposed by a protective material, which will analytically determine the thickness of the protective material, is obtained for the first time. 3. Using a numerical simulation method, a number of standard parameters were first obtained as a series of relationships between the degree of reduction of absorbed energy and the source of energy of human energy. 4. Applying the numerical simulation method, a number of standard parameters were first obtained as a series of relationships between the absorbed dose of the thickness of the protective material.