Abstract In the present work, nuclear radiation shielding proficiency of eight glassy alloys (Gd25RE25Co25Al25 (RE = Tb, Dy and Ho)) containing different amounts rare earth elements was investigated with MCNPX simulation codes. Mass attenuation coefficients ( ? / ? ) were simulated in energy interval 0.2–20 MeV by exploiting codes, generated data found to match theoretical WinXCOM results. Next...

Half Value Layer calculations theoretically need prior specification of linear attenuation calculations, since the HVL value is derived by dividing ln(2) coefficient. The purpose this study was to establish a direct computational model for determining HVL, vital parameter in nuclear radiation safety studies and shielding material design. Accordingly, typical gamma-ray transmission setup has bee...

We study a semiparametric generalized additive coefficient model, in which linear predictors in the conventional generalized linear models is generalized to unknown functions depending on certain covariates, and approximate the nonparametric functions by using polynomial spline. The asymptotic expansion with optimal rates of convergence for the estimators of the nonparametric part is establishe...

ABSTRAKPerisai radiasi dengan nilai koefisien atenuasi linier tinggi dan harga bahan yang ekonomis menjadi pertimbangan dalam pengembangan perisai radiasi. Bahan berpotensi untuk dikembangkan adalah pasir besi batu apung. Dalam penelitian ini dilakukan investigasi pengaruh variasi komposisi campuran agregat besi-batu apung terhadap densitas serta ketebalan beton kemampuannya menyerap sinar-x. P...

Abstract Mechanical properties, elastic moduli, transmission factors (TFs), and gamma-ray shielding performance of quaternary glass systems with chemical composition (0.25? x )Bi 2 O 3 – B ?0.75(50%P 5 ?50%V ), where = 0.05 (S1), 0.10 (S2), 0.15 (S3), 0.20 (S4) mol%, were comprehensively studied. The MCNPX code, Phy-X/PSD software, the Makishima–Mackenzie model utilized to achieve mentioned pur...

The purpose of this study is to conduct a thorough examination the direct and indirect impacts increasing quantity heavy WO3 on gamma-ray transmission, shielding mechanical properties for some selected barium-phosphate-tungsten glasses. Accordingly, oxides with chemical formula (50-x)P2O5-50BaO-xWO3 (x = 0.0(S1), 5.0(S2), 10(S3), 15(S4)) mol% was evaluated using Makishima-Mackenzie model. Next,...

The mechanical and radiation shielding properties for the PbO–MoO3–Li2O–B2O3 glass system were theoretically investigated in this paper. (coded as glasses) was fabricated using melt quenching mechanism. optical packing density (OPD) increases from 75.563 to 84.366, oxygen molar volume (OMV) decreases 13.234 11.853 cm3/mol when increasing PbO concentration. values of elastic moduli decreased 47....

Introduction: Average glandular dose calculation in mammography with Mo-Rh target-filter and dose calculation for different situations is accurate and fast. Material and Methods: In this research, first of all, x-ray spectra of a Mo target bombarded by a 28 keV electron beam with and without a Rh filter were calculated using the MCNP code. Then, we used the Sobol-Wu parameters to write a FORTRA...