Study on Composite Material for Shielding Mixed Neutron and $\gamma$-Rays

Composite Material for Shielding Mixed Radiation

“…We employed a round surface with fission energy spectra as a radiation source, the dose equivalent corresponding to 2.407 neutrons and 7.77 photons (these are the average number released per fission event [7]) was selected applying the optimized objective function [8] [9], this function subjects to certain constraints: equalities, inequalities and domain constraints. They depend on the uniformity of the composite material components, the component range of every element in composite from minimum to maximum, and the density of composite materials:…”

“…So it can estimated weaken ratio acceding to (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11). In the experiments it observed the fundus, we discover that the rang of fundus' peak is so tiny, then it could be negligibled, this is the advantage to use the devise to test the weaken ratio.…”

Modern Approaches to Polymer Materials Protecting from Ionizing Radiation

“…However, radioactive-shielding hardware made of these materials is heavy and bulky, which is unwelcome for the most of applications. For example, in case of mobile nuclear facilities and manned spaceships, lighter and more compact radiation-shielding materials are preferable due to the reduction of installation area and higher mobility, which are demanded from such devices 16 .…”

“…Due to their sets properties (light weight, low dielectric constant, resistance to corrosive environments and organic solvents, ability to produce both rigid and flexible framework structures), organic polymer materials are widely used in all fields of activity, including those exposed to higher radiation hazard: microelectronics, aerospace industry, gas separation, fuel cell manufacturing; matrices for creating reinforced composites based on light carbon fibers and designed for replacing metal parts relevant to the aerospace industry and spacecraft body parts; and cable industry (production of electrically insulating lacquers and enamels) 16 . As a rule, polymer materials' resistance to ionizing radiation is limited by their mechanical properties, since they turn fragile and lose their ability to withstand mechanical loads.…”

Shielding Effect of Boron Carbide Aluminium Metal Matrix Composite against Gamma and Neutron Radiation

“…There are several factors that influence the selection and use of radioactive shielding materials. Considerations such as attenuation effectiveness, strength, resistance to damage, thermal properties, and cost efficiency can affect radiation protection in various ways [2].…”