8-10 June 2016
Asia/Bangkok timezone

Gamma-ray shielding and elastic properties of recycled silica gel glasses

Not scheduled
15m
Poster presentation Nuclear and Radiation Physics

Speaker

Poonnaphob Sopapan (Department of Physics, Faculty of Science, Ubon Ratchathani University)

Description

The purpose of this work is to study the elastic moduli and gamma-ray shielding properties of the recycled silica gel glass (RSG) in 10CaO–xPbO–(90-x)RSG glass systems (where x = 20 to 45 mol.%) were prepared by the rapid quenching technique. In this work, the silica gel deterioration are source of silicon dioxide (SiO2) in this glass systems. Densities and longitudinal ultrasonic velocities values of the prepared glass samples were used for calculated the elastic properties (longitudinal modulus). Gamma-ray shielding properties have been estimated in terms of mass attenuation coefficient and half value layer at photon energies 662, 1173 keV. Gamma-ray shielding parameters of glass samples have been compared with theory, experiment value and standard nuclear radiation shielding (barite concrete). It has been inferred that PbO containing glass samples indicates the better shielding properties. The obtain results show that changes in elastic properties of this glass systems depend on the PbO content, which are related to the number of non-bridging oxygens (NBOs) and bridging oxygens (BOs). The result concluded that silica gel deterioration can be potential candidates for gamma-ray shielding applications.

Keyword : glasses, silica gel, ultrasonic velocity, gamma-ray shielding

Primary author

Poonnaphob Sopapan (Department of Physics, Faculty of Science, Ubon Ratchathani University)

Co-authors

Prof. Cherdsak Bootjomchai (Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand) Dr Oruethai Jaiboon (Department of Physics, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand) Prof. Raewat Laopaiboon (Glass Technology Excellence Center, Ubon Ratchathani University, Ubon Ratchatani, 34190, Thailand) Prof. jintana Laopaiboon (Glass Technology Excellence Center, Ubon Ratchathani University, Ubon Ratchatani, 34190, Thailand)

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