期刊
CURRENT APPLIED PHYSICS
卷 18, 期 6, 页码 717-727出版社
ELSEVIER
DOI: 10.1016/j.cap.2018.02.018
关键词
Shielding properties; Mass stopping power; Fast neutron; Elastic modulus; Lead borate glasses; MCNPX
Several physical parameters such as the packing density (PD), oxygen molar volume (OMV), oxygen packing density (OPD) and the elastic moduli of the quaternary glass system xPbO-(30-x) SiO2-46.67B(2)O(3)-23.33Na(2)O (x = 0, 5, 10 and 15 mol%) have been evaluated. The elastic moduli were computed according to Makishima-Mackenzie model and Rocherulle model. The values of these moduli have been compared to their experimental values. Moreover, different shielding parameters such as mass attenuation coefficients (MAC), half value layer (HVL), mean free path (MFP), effective atomic numbers (EAN), effective electron densities (EED) and buildup factors have been evaluated using the WinXcom program in the energy range 0.015-15 MeV for the quaternary studied glass system. The MAC values have been compared with MCNPX (version 2.6.0) Monte Carlo code. Besides, mass stopping power (MSP) for proton, alpha and electron as well as the removal cross section for fast neutron (Sigma(R)) have been calculated. The results observed that the composition has the highest value of PbO (15 mol %) showed excellent nuclear radiation shielding and elastic properties. (C) 2018 Korean Physical Society. Published by Elsevier B.V. All rights reserved.
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