Li2B4O7–Bi2O3–ZrO4–CaWO4 glass system for neutron protection in neutron applications

Aygün B., Yıldız Yorgun N., Sayyed M., KARABULUT A.

Progress in Nuclear Energy, cilt.162, 2023 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 162
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1016/j.pnucene.2023.104751
  • Dergi Adı: Progress in Nuclear Energy
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Environment Index, INSPEC, Pollution Abstracts, Civil Engineering Abstracts
  • Anahtar Kelimeler: GEANT4, Glass, Neutron radiation, Shielding
  • Van Yüzüncü Yıl Üniversitesi Adresli: Evet

Özet

In this study, new glass samples with a chemical composition of 40Li2B4O7+xBi2O3+(55–x)ZrO4+5CaWO4 (x = 10, 20, 30, 40, and 50 wt%) were fabricated using the melt quenching-annealing technique. Important neutron shielding parameters, such as the effective neutron removal cross-section, half-value layer, and neutron transmission factor, of all the new glass samples were calculated using the GEANT4 Monte Carlo simulation code. In addition, neutron dose measurements were performed using an 241Am–Be fast neutron source with an activity of 74 GBq and an average neutron energy of 4.5 MeV and a BF3 gaseous neutron detector. The results were compared with those of conventional shielding materials to determine the neutron absorption capabilities of the new glass materials. All the new glass samples were found to have excellent neutron shielding abilities. In particular, the GB5 sample had a high absorption capacity compared to the other samples. These new glass samples may be used as shielding materials in various radiation applications, such as generation of nuclear energy, radiation medicine, and the transport and storage of radioactive wastes.