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Capability of resisting γ-ray irradiation and Rietveld structurerefinement of zircon

Zhang Dong Lu Xi-Rui Cui Chun-Long Chen Meng-Jun Yang Yan-Kai

Capability of resisting γ-ray irradiation and Rietveld structurerefinement of zircon

Zhang Dong, Lu Xi-Rui, Cui Chun-Long, Chen Meng-Jun, Yang Yan-Kai
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  • Received Date:  05 January 2010
  • Accepted Date:  26 October 2010
  • Published Online:  15 July 2011

Capability of resisting γ-ray irradiation and Rietveld structurerefinement of zircon

  • 1. (1)Institute of Nuclear Physics and Chemistry, CAEP, Mianyang 621900, China; (2)National Defense Key Discipline Lab of Nuclear Waste and Environmental Safety, SWUST, Mianyang 621010, China

Abstract: 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.

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