Open AccessCapability of resisting γ-ray irradiation and Rietveld structurerefinement of zircon
Author(s) -
Xirui Lu,
Cui Chunlong,
Dong Zhao,
Mengjun Chen,
Yang Yan-Kai
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.078901
Subject(s) - zircon , irradiation , materials science , scanning electron microscope , x ray , rietveld refinement , crystal (programming language) , microstructure , crystal structure , crystallography , analytical chemistry (journal) , optics , composite material , chemistry , geology , geochemistry , physics , nuclear physics , environmental chemistry , programming language , computer science
In order to investigate the structural stability for zircon in mothball waste form of radionuclide to resist γ-ray irradiation, the zircon crystals, which are collected from Australia, are studied. The crystal grains are irradiated by a60Co γ-ray source with 1728 kGy doses. The chemical compositions of zircons are analyzed by X-ray fluorescence spectrometry (XRF). Moreover, phases, structures and microstructures of the samples before and after γ-ray irradiation are characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results indicate that the new phases are not found in the crystals before and after γ-ray irradiation with 1728 kGy. The crystal cell parameters change by 10-4 before and after irradiation. Moreover, no obvious damage to the structure is found in the zircon irradiated by γ-ray with 1728 kGy dose. So, the zircon possesses a better capability to resist γ-ray irradiation which hardly influence the degree of disorder for zircon.