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高能带电粒子与航天器介质材料相互作用引起的深层带电现象, 一直是威胁航天器安全运行的重要因素之一. 考虑入射电子在介质中的电荷沉积、能量沉积分布以及介质中的非线性暗电导和辐射诱导电导, 建立了介质深层充电的单极性电荷输运物理模型. 通过求解电荷连续性方程和泊松方程, 可以得出不同能量 (0.1–0.5 MeV) 电子辐射下, 低密度聚乙烯 (厚度为1 mm) 介质中的电荷输运特性. 计算结果表明, 不同能量的电子辐射下, 介质充电达到平衡时, 最大电场随入射能量的增加而减小; 同一能量辐射下, 最大电场随束流密度的增大而增加. 入射电子能量较低时 (≤ 0.3 MeV) , 最大电场随束流密度的变化趋势基本相同. 具体表现为: 当束流密度大于3× 10-9 A/m2时, 最大场强超过击穿阈值2×107 V/m, 发生静电放电 (ESD) 的可能性较大. 随着入射电子能量的增加, 发生静电放电 (ESD) 的临界束流密度增大, 在能量为0.4 MeV时, 临界束流密度为6×10-8 A/m2. 当能量大于等于0.5 MeV时, 在束流密度为10-9–10-6 A/m2的范围内, 均不会发生静电放电 (ESD) . 该物理模型对于深入研究深层充放电效应、评估航天器在空间环境下 深层带电程度及防护设计具有重要的意义.
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关键词:
- 高能电子辐射 /
- 低密度聚乙烯(LDPE) /
- 介质深层充电 /
- 电导特性
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[2] Jun I, Garrett H B, Kim W, Minow J I 2008 IEEE Transactions on Plasma Science. 36 2467
[3] Qin X G 2010 Ph. D. Dissertation (Lanzhou: Lanzhou University) (in Chinese) [秦晓刚 2010 博士学位论文(兰州: 兰州大学)]
[4] Quan R H 2009 Ph. D. Dissertation (Beijing: Graduate University of Chinese Academy of Sciences) (in Chinese) [全荣辉 2009 博士学位论文 (北京: 中国科学院研究生院)]
[5] Qin X G, He D Y, Wang J 2009 Acta Phys. Sin. 58 684 (in Chinese) [秦晓刚, 贺德衍, 王骥 2009 物理学报 58 684]
[6] Tu D M, Wang X, Lv Z P, Wu K, Peng Z R 2012 Acta Phys. Sin. 61 017104 (in Chinese) [屠德民, 王霞, 吕泽鹏, 吴锴, 彭宗仁 2012 物理学报 61 017104]
[7] Sessler G M, Figueiredo M T, Ferreira G F L 2004 IEEE Transactions on Dielectrics and Electrical Insulation 11 192
[8] Min D M, Cho M, Khan A R, Li S T 2012 IEEE Transactions on Dielectrics and Electrical Insulation 19 600
[9] Dennison J R, Brunson J 2008 IEEE Transactions on Plasma Science 36 2246
[10] Fitting H J, Cornet N, Tauzin M, Goeuriot D, Guerret-Piecourt C, Treheux D 2007 Journal of the European Ceramic Society 27 3977
[11] Frederickson A R, Woolf S, Garth J C 1993 IEEE Transactions on Nuclear Science 40 1393
[12] Huang J G, Chen D 2004 Chinese Journal Geophysics 47 392 (in Chinese) [黄建国, 陈东 2004 地球物理学报47 392]
[13] Dennison J R, Sim A, Brunson J, Gillespie J, Hart S, Dekany J, Sim C, Arnfield D 2009 47th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition Orlando, Florida, January 5-8, 2009 p0562
[14] Soensen J, Rodger D S, Ryden K A, Latham P M, Wrenn G L, Levy L, Panabiere G 2000 IEEE Transactions on Nuclear Science 41 491
[15] Touzin M, Goeuriot D, Guerret-Piécourt C, Juvé D, Tréheux D, Fitting H J, 2006 J. Phys. D: Appl. Phys. 99 11411011
[16] Roy S L, Baudoin F, Griseri V, Laurent C, Teyssedre G 2010 J. Phys. D: Appl. Phys. 43 315402
[17] Perrin C, Griseri V, Inguimbert C, Laurent C 2008 J. Phys. D: Appl. Phys. 41 205417
[18] Perrin C, Griseri V, Laurent C, Fukunaga K, Maeno T, Levy L, Payan D, Schwander D 2008 High Performance Polymers 20 535
[19] Ryschkewitsch M G 2011 Mitigating in space charging effects -a guideline (Washington: NASA) p33
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[1] Quan R H, Zhang Z L, Han J W, Huang J G, Yan X J 2009 Acta Phys. Sin. 58 1205 (in Chinese) [全荣辉, 张振龙, 韩建伟, 黄建国, 闫小娟 2009 物理学报 58 1205]
[2] Jun I, Garrett H B, Kim W, Minow J I 2008 IEEE Transactions on Plasma Science. 36 2467
[3] Qin X G 2010 Ph. D. Dissertation (Lanzhou: Lanzhou University) (in Chinese) [秦晓刚 2010 博士学位论文(兰州: 兰州大学)]
[4] Quan R H 2009 Ph. D. Dissertation (Beijing: Graduate University of Chinese Academy of Sciences) (in Chinese) [全荣辉 2009 博士学位论文 (北京: 中国科学院研究生院)]
[5] Qin X G, He D Y, Wang J 2009 Acta Phys. Sin. 58 684 (in Chinese) [秦晓刚, 贺德衍, 王骥 2009 物理学报 58 684]
[6] Tu D M, Wang X, Lv Z P, Wu K, Peng Z R 2012 Acta Phys. Sin. 61 017104 (in Chinese) [屠德民, 王霞, 吕泽鹏, 吴锴, 彭宗仁 2012 物理学报 61 017104]
[7] Sessler G M, Figueiredo M T, Ferreira G F L 2004 IEEE Transactions on Dielectrics and Electrical Insulation 11 192
[8] Min D M, Cho M, Khan A R, Li S T 2012 IEEE Transactions on Dielectrics and Electrical Insulation 19 600
[9] Dennison J R, Brunson J 2008 IEEE Transactions on Plasma Science 36 2246
[10] Fitting H J, Cornet N, Tauzin M, Goeuriot D, Guerret-Piecourt C, Treheux D 2007 Journal of the European Ceramic Society 27 3977
[11] Frederickson A R, Woolf S, Garth J C 1993 IEEE Transactions on Nuclear Science 40 1393
[12] Huang J G, Chen D 2004 Chinese Journal Geophysics 47 392 (in Chinese) [黄建国, 陈东 2004 地球物理学报47 392]
[13] Dennison J R, Sim A, Brunson J, Gillespie J, Hart S, Dekany J, Sim C, Arnfield D 2009 47th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition Orlando, Florida, January 5-8, 2009 p0562
[14] Soensen J, Rodger D S, Ryden K A, Latham P M, Wrenn G L, Levy L, Panabiere G 2000 IEEE Transactions on Nuclear Science 41 491
[15] Touzin M, Goeuriot D, Guerret-Piécourt C, Juvé D, Tréheux D, Fitting H J, 2006 J. Phys. D: Appl. Phys. 99 11411011
[16] Roy S L, Baudoin F, Griseri V, Laurent C, Teyssedre G 2010 J. Phys. D: Appl. Phys. 43 315402
[17] Perrin C, Griseri V, Inguimbert C, Laurent C 2008 J. Phys. D: Appl. Phys. 41 205417
[18] Perrin C, Griseri V, Laurent C, Fukunaga K, Maeno T, Levy L, Payan D, Schwander D 2008 High Performance Polymers 20 535
[19] Ryschkewitsch M G 2011 Mitigating in space charging effects -a guideline (Washington: NASA) p33
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