Determination of effective atomic number and electron density of heavy metal oxide glasses

ALI A. M., EL-KHAYATT A. M., AKKURT İ.

RADIATION EFFECTS AND DEFECTS IN SOLIDS, vol.171, pp.202-213, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 171
  • Publication Date: 2016
  • Doi Number: 10.1080/10420150.2016.1170016
  • Journal Name: RADIATION EFFECTS AND DEFECTS IN SOLIDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.202-213
  • Keywords: MCNP, effective atomic number, glass, effective electron number, XCOM, Auto-Z(eff) program, ATTENUATION COEFFICIENTS, ABSORPTION, NEUTRON, PROGRAM
  • Süleyman Demirel University Affiliated: Yes

Abstract

The effective atomic number (Z(eff)) and effective electron density (N-eff) of eight heavy metal oxide (HMO) glasses have been determined using the Monte Carlo simulation code MCNP for the energy range of 10 keV-10 MeV. The interpolation method was employed to extract Z(eff) and N-eff values from the simulation and that calculated with the help of XCOM program. Comparisons are also made with predictions from the Auto-Z(eff) software in the same energy region. Wherever possible, the simulated values of Z(eff) and N-eff are compared with experimental data. In general, a very good agreement was noticed. It was found that the Z(eff) and N-eff vary with photon energy and do not have extended intermediate regions where Compton scattering is truly dominating; only dips slightly above similar to 1.5 MeV were recorded. Z(eff) and N-eff are found to increase with PbO and Bi2O3 contents. It was found that the Z(eff) value rather than the N-eff value is a better indicator for PbO and/or Bi2O3 contents.