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为研究放射性核素固化介质备选矿物锆英石的抗γ射线辐照结构稳定性,以澳大利亚锆英石为研究对象,通过60Co源γ射线辐照装置对样品施以1728 kGy的γ射线辐照.利用X射线荧光光谱仪、扫描电子显微镜和X射线衍射仪对样品的元素含量、γ射线辐照前后的微观形貌及物相变化进行表征,同时利用Rietveld方法对γ射线辐照前后的样品进行了结构精修.结果表明:澳大利亚锆英石经1728 kGy剂量的γ射线辐照后未发生物相变化,射线辐照前后样品的晶胞参数仅发生了10-4 量级的变
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关键词:
- 锆英石 /
- γ射线 /
- 辐照 /
- Rietveld结构精修
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.-
Keywords:
- zircon /
- γ-ray /
- irradiation /
- Rietveld structure refinement
[1] Lu H P, Wang R C, Lu X C 2003 Earth Science Frontiers 10 403 (in Chinese) [卢海萍、王汝成、陆现彩 2003 地学前缘 10 403]
[2] Han S Y, Xu Y X, Wang F Q 1991 Acta Phys. Sin. 40 149 (in Chinese) [韩世萤、眭云霞、王福泉 1991 40 149]
[3] Zhang Z 1988 Special Casting and Nonferrous Alloys 3 47 (in Chinese) [张 湛 1988 特种铸造及有色合金 3 47]
[4] Robinson K, Gibbs G V, Ribbe P H 1971 American Mineralogist 56 782
[5] Weber W J, Ewing R C, Catlow C R A 1998 Journal of Materials Research 13 1434
[6] Ewing R C, Weber W J, Clinard F W 1995 Progress in Nuclear Energy 29 63
[7] Ewing R C 2001 The Canadian Mineralogist 39 697
[8] Zhang Chunliang, WANG Ju, SU Kun 2006 Chinese Journal of Rock Mechanics and Engineering 25 750
[9] Weber W J 1991 Radiation Effects and Defects in Solids 115 341
[10] Ming Z, Salje E K H 2001 J. Phys. Condens. Matter 13 3057
[11] Weber W J, Ewing R C, Meldrum A 1997 Journal of Nuclear Materials 250 147
[12] Ewing R C 1976 Science 192 1336
[13] Weber W J 1991 Radiation Effects and Defects in Solids 115 341
[14] Carrez P, Forterre C, Braga D 2003 Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 211 549
[15] Cordierite, Koepke J, Schulz H 1986 Physics and Chemistry of Mineral 13 165
[16] Tan G T, Chen Z H 2007 Acta Phys. Sin. 56 1702 (in Chinese) [谈国太、陈正豪 2007 56 1702]
[17] Hazen R M, Finger L W, Hemley R J, Mao H K 1989 Solid State Communications 72 507
[18] Dollase W A 1965 Zeitschrift fur Kristallographie 121 369
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[1] Lu H P, Wang R C, Lu X C 2003 Earth Science Frontiers 10 403 (in Chinese) [卢海萍、王汝成、陆现彩 2003 地学前缘 10 403]
[2] Han S Y, Xu Y X, Wang F Q 1991 Acta Phys. Sin. 40 149 (in Chinese) [韩世萤、眭云霞、王福泉 1991 40 149]
[3] Zhang Z 1988 Special Casting and Nonferrous Alloys 3 47 (in Chinese) [张 湛 1988 特种铸造及有色合金 3 47]
[4] Robinson K, Gibbs G V, Ribbe P H 1971 American Mineralogist 56 782
[5] Weber W J, Ewing R C, Catlow C R A 1998 Journal of Materials Research 13 1434
[6] Ewing R C, Weber W J, Clinard F W 1995 Progress in Nuclear Energy 29 63
[7] Ewing R C 2001 The Canadian Mineralogist 39 697
[8] Zhang Chunliang, WANG Ju, SU Kun 2006 Chinese Journal of Rock Mechanics and Engineering 25 750
[9] Weber W J 1991 Radiation Effects and Defects in Solids 115 341
[10] Ming Z, Salje E K H 2001 J. Phys. Condens. Matter 13 3057
[11] Weber W J, Ewing R C, Meldrum A 1997 Journal of Nuclear Materials 250 147
[12] Ewing R C 1976 Science 192 1336
[13] Weber W J 1991 Radiation Effects and Defects in Solids 115 341
[14] Carrez P, Forterre C, Braga D 2003 Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 211 549
[15] Cordierite, Koepke J, Schulz H 1986 Physics and Chemistry of Mineral 13 165
[16] Tan G T, Chen Z H 2007 Acta Phys. Sin. 56 1702 (in Chinese) [谈国太、陈正豪 2007 56 1702]
[17] Hazen R M, Finger L W, Hemley R J, Mao H K 1989 Solid State Communications 72 507
[18] Dollase W A 1965 Zeitschrift fur Kristallographie 121 369
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