Radiation Defects Induced by Proton Exposure in Hollow Zinc-Oxide Particles

被引：5

作者：

Dudin, A. N. ^{[1
]}

Neshchimenko, V. V. ^{[1
]}

Yurina, V. Yu. ^{[1
]}

机构：

[1] Amur State Univ, Blagoveshchensk 675000, Russia

来源：

JOURNAL OF SURFACE INVESTIGATION | 2020年 / 14卷 / 04期

关键词：

zinc oxide; hollow particles; optical properties; irradiation; defects; surface morphology; specific surface of hollow particles; simulation; GEANT4;

D O I：

10.1134/S1027451020040242

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Zinc-oxide powders consisting of spherical hollow particles are obtained by hydrothermal synthesis. Comparative analysis of the diffuse reflectance spectra and their changes after irradiation with 100-keV protons of powders of micrometer-sized hollow and bulk particles of zinc oxide is carried out. We present the results of the physical and mathematical simulation of the interaction of a low-energy proton beam with zinc-oxide particles, using the GEANT4 software package. The calculation results and the experimental data are compared. Hollow particles have a greater radiation resistance to protons compared to micrometer-sized bulk particles. The effect is determined by the absence of radiation-induced defects in the volume of spherical particles, a large ionization loss associated with surface-defect formation, and the significant relaxation of radiation-induced defects in a thin layer of spheres.

引用

页码：823 / 829

页数：7

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