The development of a new shielding material against high energy X-rays by adding boron compound to cerrobend alloy

After the discovery of X-rays, the widespread use of ionizing radiation led to the emergence of radiation-induced biological damage. For this reason, shielding methods and materials have gained great importance for radiation protection. In this doctoral thesis, four different blocks were produced for the mixture of B4C and cerrobend alloy using the "Shielding Calculation Program" developed. The shielding performances of these blocks were analyzed by dosimetric and radiobiological methods. During the measurements, X-rays with 6 MV and 15 MV energies produced in the linear accelerator were used. Half value thickness, mean free path, total attenuation coefficient and linear absorption coefficient values obtained from dosimetric measurements were analyzed. It was observed that Block 2 (Cerrobend + 2,5 gr B4C) had the most successful shielding parameters among all blocks. Dosimetric findings were found to be statistically significant and consistent with the literature for all energy values for all blocks. Human fibroblast cell was used during the radiobiological analyzes and MTT method was used for the analysis of the shielding performance. In irradiation with 6 MV X-rays, the survival rate of the cells for Block 2 was 87.6859%, while it was 46.3789% for 15 MV X-rays. Survival fraction for Block 2 were higher than for all other blocks. Finally, it was observed that Block 2 was more successful than other blocks in the cost-benefit analysis. The obtainend showed that Block 2 is a candidate to be an innovative shielding material.