Evaluation of shielding parameters for heavy metal fluoride based tellurite-rich glasses for gamma ray shielding applications. (October 2017)

• Record Type: Journal Article
• Authors: Sayyed, M.I.; Lakshminarayana, G.; Kityk, I.V.; Mahdi, M.A.
• Is Part Of: Radiation physics and chemistry. Volume 139(2017)
• Page Start: 33
• Page End: 39
• Publication Date: 2017-10
• Subjects: Optical materials -- Tellurite glasses -- Mass attenuation coefficient -- Effective atomic number -- Half-value layer (HVL) -- Exposure buildup factors (EBF); Radiation chemistry -- Periodicals; Radiometry -- Periodicals; Radiation -- Periodicals; Chimie sous rayonnement -- Périodiques; 539.2
• DOI: 10.1016/j.radphyschem.2017.05.013
• Languages: English
• ISSNs: 0969-806X

Abstract

Abstract: In this work, we have evaluated the γ-ray shielding parameters such as mass attenuation coefficient (μ/ρ), effective atomic number (Zeff ), half value layer (HVL), mean free path (MFP) and exposure buildup factors (EBF) for heavy metal fluoride (PbF2 ) based tellurite-rich glasses. In addition, neutron total macroscopic cross sections (∑R ) for these glasses were also calculated. The maximum value for µ/ρ, Zeff and ∑R was found for heavy metal (Bi2 O3 ) oxide introduced glass. The results of the selected glasses have been compared, in terms of MFP with different glass systems. The shielding effectiveness of the selected glasses is found comparable or better than of common ones, which indicates that these glasses with suitable oxides could be developed for gamma ray shielding applications. Highlights: μ/ρ, Zeff, HVL and MFP for PbF2 based tellurite-rich glasses have been calculated. µ/ρ and Zeff depend on the photon energy and chemical composition of the glasses. EBF values of these glasses have been calculated using G-P fitting method. The maximum value for µ/ρ and Zeff was found for Bi2 O3 oxide introduced glass. New types of non-traditional radiation shielding glasses are demonstrated.