Simulation of ASTROD I test mass charging due to solar energetic particles and interplanetary electrons
文献类型：期刊论文
| 作者 | Liu, L.1,2 ; Dong, Y.1,2; Bao, G.1; Ni, W. -T.1; Shaul, D. N. A.3
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| 刊名 | ADVANCES IN SPACE RESEARCH
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| 出版日期 | 2010-01-04 |
| 卷号 | 45期号:1页码:200-207 |
| 关键词 | ASTROD I Solar energetic particles Interplanetary electrons Charging simulation Drag-free Disturbances |
| ISSN号 | 0273-1177 |
| 英文摘要 | As ASTROD I travels through space, its test mass will accrue charge due to exposure of the spacecraft to high-energy particles. This test mass charge will result in Coulomb forces between the test mass and the surrounding electrodes. In earlier work, we have used the GEANT 4 toolkit to simulate charging of the ASTROD test mass due to cosmic-ray protons of energies between 0.1 and 1000 GeV at solar maximum and at solar minimum. Here we use GEANT 4 to simulate the charging process due to solar energetic particle events and interplanetary electrons. We then estimate the test mass acceleration noise due to these fluxes. The predicted charging rates range from 2247 e(+)/s to 47,055 e(+)/s, at peak intensity, for the four largest SEP events in September and October 1989. Although the noise due to charging exceeds the ASTROD I budget for the two larger events, it can be suppressed through continuous discharging. The acceleration noise during the two small events is well below the design target. The charging rate of the ASTROD I test mass due to interplanetary electrons in this simulation is about -11% of the cosmic-ray protons at solar minimum, and over -37% at solar maximum. In addition to the Monte Carlo uncertainty, ail error of +/- 30% in the net charging rates should be added to account for uncertainties in the spectra, physics models and geometry implementations. (C) 2009 COSPAR. Published by Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences |
| 类目[WOS] | Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences |
| 研究领域[WOS] | Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences |
| 关键词[WOS] | COSMIC-RAY ELECTRONS ; LISA MISSION ; SPECTRA ; DISTURBANCES ; MANAGEMENT ; POSITRONS ; MINIMUM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000273918100019 |
| 公开日期 | 2011-11-23 |
| 源URL | [http://159.226.72.40/handle/332002/1075]  |
| 专题 | 紫金山天文台_近地天体探测和太阳系天体研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England |
| 推荐引用方式 GB/T 7714 | Liu, L.,Dong, Y.,Bao, G.,et al. Simulation of ASTROD I test mass charging due to solar energetic particles and interplanetary electrons[J]. ADVANCES IN SPACE RESEARCH,2010,45(1):200-207. |
| APA | Liu, L.,Dong, Y.,Bao, G.,Ni, W. -T.,&Shaul, D. N. A..(2010).Simulation of ASTROD I test mass charging due to solar energetic particles and interplanetary electrons.ADVANCES IN SPACE RESEARCH,45(1),200-207. |
| MLA | Liu, L.,et al."Simulation of ASTROD I test mass charging due to solar energetic particles and interplanetary electrons".ADVANCES IN SPACE RESEARCH 45.1(2010):200-207. |
入库方式： OAI收割
来源：紫金山天文台
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