The ASTROD I charging simulation and disturbances due to solar energetic particles at 0.5 AU
文献类型：期刊论文
| 作者 | Bao, Gang
|
| 刊名 | ACTA ASTRONAUTICA
 |
| 出版日期 | 2012-08-01 |
| 卷号 | 77页码:29-33 |
| 关键词 | Charging Simulation Geant4 SEPs |
| ISSN号 | 0094-5765 |
| 英文摘要 | The electrostatic charging of ASTROD I test mass (the Astrodynamical Space Test of Relativity using Optical Devices I) will disturb its pure geodesic motion due to spurious Coulomb and Lorentz forces. The three main disturbances associated with the charging are the acceleration noise of the test mass, the coupling between the test mass and the spacecraft, the appearance of unwanted coherent Fourier components in the measurement bandwidth. By implementing the same geometry and physics models in our previous work, a positive charging rate of 9369 e(+)/s for the solar energetic particles (SEPs) event on October 19th 1989 is predicted. Based on these charging rates, we calculated the acceleration noise and stiffness associated with charging. We also compared the acceleration noises arising from Coulomb and Lorentz effects using different discharge characteristics. Although the noise due to charging exceeds the ASTROD I budget for the two events at 0.5 AU, it can be suppressed through continuous discharging. In addition to Monte Carlo uncertainty, an error of +/- 30% in the net charging rates was added to account for uncertainties in the primaries spectra, physics and geometry models. (C) 2012 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Engineering, Aerospace |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | LISA MISSION ; MANAGEMENT |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000305303700003 |
| 公开日期 | 2013-01-31 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/8026]  |
| 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 | Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Gang. The ASTROD I charging simulation and disturbances due to solar energetic particles at 0.5 AU[J]. ACTA ASTRONAUTICA,2012,77:29-33. |
| APA | Bao, Gang.(2012).The ASTROD I charging simulation and disturbances due to solar energetic particles at 0.5 AU.ACTA ASTRONAUTICA,77,29-33. |
| MLA | Bao, Gang."The ASTROD I charging simulation and disturbances due to solar energetic particles at 0.5 AU".ACTA ASTRONAUTICA 77(2012):29-33. |
入库方式： OAI收割
来源：紫金山天文台
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