Gamma-ray and neutron shielding efficiency of Pb-free gadolinium-based glasses

V. P. Singh, N. M. Badiger, S. Kothan, S. Kaewjaeng, T. Korkut, H. J. Kim, J. Kaewkhao

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

The radiation shielding efficiency of material depends upon photon attenuation, exposure buildup factors and neutron removal capacity. A newly developed Pb-free gadolinium-based glasses in compositions (80-x) B2O3-10SiO2-10CaO-xGd2O3 (where x = 15, 20, 25, 30 and 35 mol%) had completely been investigated for their shielding efficiency with Geant4 simulation for mass attenuation coefficients and neutron total macroscopic cross section and by calculating exposure buildup factors. The exposure buildup factors for photon energy from 0.015 to 15 MeV had been calculated up to 40 mean free paths using five factors geometric progression method. The mass attenuation coefficients of the Pb-free glasses were simulated for energies from 223 to 2614 keV and compared with the possible available experimental results. The neutron shielding efficiency of these glasses was discussed by calculating neutron total macroscopic cross section for energies from 1 eV to 14.1 MeV. Present investigations are found to be very useful for applications in nuclear engineering.

Original languageEnglish
Article number103
JournalNuclear Science and Techniques/Hewuli
Volume27
Issue number4
DOIs
StatePublished - Aug 2016

Keywords

  • Buildup factor
  • Gadolinium
  • Geant4 simulation
  • Glass
  • Neutron

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