On the Radiation Stability of ZnO Powders Modified with Native Nanoparticles

Статья в журнале

We investigate changes in diffuse reflectance spectra (Δρλ) and integrated absorption coefficient (Δаs) in the range of 0.2–2.5 μm after the modification of mZnO zinc-oxide powders with particles of a few micrometers in size with native nZnO nanoparticles in the concentration range of 0.1–10.0 wt %. The reflectance coefficient (ρ) decreases in the range of 0.4–1.0 μm and increases between 1.0–2.5 μm in the modified mZnO/nZnO powders. The electron irradiation (Е = 30 keV, Ф = 2 × 1016 cm–2) of mZnO, nZnO, and mZnO/nZnO powders with different concentrations of nanoparticles shows that the optimal concentration of nanoparticles is 5 wt %. The radiation resistance of the modified powder at this concentration increases by a factor of 2.95; the radiation resistance of the nanopowder is more than twofold higher than that of a powder with particles in the micrometer range. Upon irradiation with electrons, all three types of powders form their own point defects, which absorb in the visible region, and free electrons, which absorb in the near-infrared (IR) region.

Журнал:

• Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
• Pleiades Publishing, Ltd. (New York City)

Библиографическая запись: On the Radiation Stability of ZnO Powders Modified with Native Nanoparticles [Electronic resource] / M. M. Mikhailov [et al.] // Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. – 2023. – Vol. 17. – Iss. 5. – P. 990-994. – DOI: 10.1134/S1027451023050075