玻璃空间电离辐照着色损伤动力学研究
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摘要
空间电离辐照主要由能量连续变化的粒子组成,绝大多数粒子穿透能力小,因此,空间电离辐照对玻璃的着色损伤必然随深度而呈现一种复杂的变化,针对这一现象,并且考虑到玻璃中色心的弛豫消失,本工作建立了一种适用于玻璃空间电离辐照着色损伤动力学研究的方法.以K9-HL玻璃为研究对象,利用空间电离辐照作用在玻璃中随深度变化的Monte Carlo模拟结果,研究了该玻璃在轨(近地点350 km,远地点425 km,轨道倾角51.6°)电离辐照着色损伤过程,讨论了航天器用玻璃抗辐照性能考核方法,分析了玻璃空间电离辐照着色损伤的深度分布,提出了航天器用玻璃材料抗电离辐照损伤加固的关键点.此外,对不同石英玻璃防电离辐照层保护的K9-HL玻璃在轨光学性能做了研究.
Space ionizing radiation is mainly made up of the particles(proton and electron) with continuous energy distribution,and most of the particles have poor penetration capability in the glass,as a result,space ionizing radiation induced coloration in the glass inevitably changes complexly with depth in the glass.Based on this phenomenon,and considering the relaxation process of color centers induced by irradiation in the glass,a method applicable in the study on the dynamic of space ionizing radiation induced coloration in the glass was introduced in the paper.Selecting K9-HL glass as the studied object,using the numerical method and absorbed dose distribution of space ionizing radiation with depth in the glass simulated by Monte Carlo method,the process of space ionizing radiation(the orbital: perigee 350 km,apogee 425 km,orbital inclination 51.6°) induced coloration in this glass was studied.The method of anti-irradiation performance testing for the glasses used on the spacecrafts was discussed,and space ionizing radiation induced coloration distribution in the glass was analyzed.Key anti-irradiation technologies of the glasses on the spacecraft were proposed.Additionally,optical property K9-HL glass in the orbital shielded by silica glass anti-radiation layers of different thicknesses was studied.
Space ionizing radiation is mainly made up of the particles(proton and electron) with continuous energy distribution,and most of the particles have poor penetration capability in the glass,as a result,space ionizing radiation induced coloration in the glass inevitably changes complexly with depth in the glass.Based on this phenomenon,and considering the relaxation process of color centers induced by irradiation in the glass,a method applicable in the study on the dynamic of space ionizing radiation induced coloration in the glass was introduced in the paper.Selecting K9-HL glass as the studied object,using the numerical method and absorbed dose distribution of space ionizing radiation with depth in the glass simulated by Monte Carlo method,the process of space ionizing radiation(the orbital: perigee 350 km,apogee 425 km,orbital inclination 51.6°) induced coloration in this glass was studied.The method of anti-irradiation performance testing for the glasses used on the spacecrafts was discussed,and space ionizing radiation induced coloration distribution in the glass was analyzed.Key anti-irradiation technologies of the glasses on the spacecraft were proposed.Additionally,optical property K9-HL glass in the orbital shielded by silica glass anti-radiation layers of different thicknesses was studied.
引文
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[2]WU Guo-Ting.Design and Test for Window Thermal Protectionand Sealed Structure of Shenzhou Spaceship.Spacecraft Engi-neering,2007,16(3):99–105.
[3]SONG Li-Xin,HU Xing-Fang,WU Guo-Ting.EFfects of thermaltempering on strength of window glass of manned spacecraft.Chinese Space Science and Technology,1996(4):43–49.
[4]DU Ji-Shi,WU Jie-Hua,ZHAO Li-Li,et al.Coloration of glassesinduced by space ionization radiation.Journal of Inorganic Mate-rials,2012,27(4):411–416.
[5]Mashkov V A,Austin W R,Zhang L,et al.Fundamental role ofcreation and activation in radiation-induced defect production inhigh-purity amorphous SiO2.Phys.Rev.Lett.,1996,76(16):2916–2929.
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[7]Wijnands T,Jonge L K D,Kuhnhenn J.Optical absorption incommercial single mode optical fibers in a high energy physics ra-diation field.IEEE Trans.Nucl.Sci.,2008,55(4):2216–2222.
[8]Griscom D L.Fractal kinetics of radiation-induced point-defectformation and decay in amorphous insulators:Application to colorcenters in silica-based optical fibers.Phys.Rev.B,2001,64(17):174201–1.
[9]Gilard O,Caussanel M,Duval H,et al.New model for assessingdose,dose rate,and temperature sensitivity of radiation-inducedabsorption in glasses.J.Appl.Phys.,2010,108(9):093115–1–5.
[10]ZHOU Zhong-Xiang,WANG Hong-Li,SHEN Yan-Qing,et al.Study on the optical property of quartz glass and Al film reflectorunder charged particles irradiation.Acta Physica Sinica,2008,57(1):592–599.
[11]Bishay A.Radiation Induced Color Centers In MulticomponentGlasses.J.Non-Cryst.Solids.,1970,3(1):54–114.
[12]Agostinelliae S,Allisonas J,Amakoe K,et al.Geant4—a simula-tion toolkit.Nucl.Instr.and Meth.A,2003,506(3):250–303.
[13]Lei F,Truscott P R,Dyer C S,et al.Mulassis:a geant4-based mul-tilayered shielding simulation tool.IEEE Trans.Nucl.Sci.,2002,49(6):2788–2793.
[14]Armstrong T W,Colborn B L,Bentont E V.Model calculations ofthe radiation dose and let spectra on ldef and comparisons withflight data.Radiat.Meas.,1996,26(6):751–764.
[15]Armstrong T W,Colborn B L.Evaluation of Trapped RadiationModel Uncertainties for Spacecraft Design.NASA/CR—2000–210072,Alabama,USA:Marshall Space Flight Center,2000.
[16]Schwank J R,Shaneyfelt M R,Dodd P E.Radiation Hardness As-surance Testing of Microelectronic Devices and Integrated Circuits:Radiation Environments,Physical Mechanisms,and Foundationsfor Hardness Assurance.Sandia National Laboratories DocumentSand-2008-6851P.