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The effect of Nb2O5 on fast neutron removal cross section, optical, and structural properties of some calcium borate oxide glasses containing Bi3+ ions

Abstract

Background

In recent years, the preparation of transparent glass in the visible region has led to the development of radiation shielding materials with measuring structure and optical properties. Also, the study on the interaction of neutron radiation with matter is important in the field of radiation protection.

Purpose

Preparation of transparent calcium and bismuth borate oxide glasses containing Nb5+ ions can be used as a neutron radiation shield and determine refractive index with different methods for this glass.

Methods

Niobium bismuth borate glasses with composition 60B2O3–20CaO–(20 − x)Bi2O3xNb2O5, where (x is in mol%, 0 ≤ x ≤ 10), have been prepared using conventional melt-quenching technique; the structure of each sample was studied by XRD, FTIR, and UV spectra chart analysis.

Results

XRD and FTIR showed that all glass samples were highly homogeneous and had structured with short-range-order/amorphous solids. The refractive index of each sample was estimated by charts of UV–Vis and FTIR, in addition to an empirical method, and we obtained values very close to each other. The refractive index values are relatively high, so this glass can be used in nonlinear studies as well as luminescence characterization. The macroscopic fast neutron removal cross sections (ΣR/ρ) have calculated, for all samples, and the highest value was in sample containing 2.5% niobium pentoxide.

Conclusion

Bismuth borate glass containing a few niobium pentoxide can be used as a protective shield of neutrons.

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Saudi, H.A., Gomaa, H. The effect of Nb2O5 on fast neutron removal cross section, optical, and structural properties of some calcium borate oxide glasses containing Bi3+ ions. Radiat Detect Technol Methods 3, 7 (2019). https://doi.org/10.1007/s41605-018-0083-x

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  • DOI: https://doi.org/10.1007/s41605-018-0083-x

Keywords

  • Oxide glasses
  • Refractive index
  • UV–Vis
  • Borate glass
  • Optical properties