Test mass charging simulation of ASTROD I due to solar energetic particles at 0.5 AU

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 近地天体探测和太阳系天体研究团组

	Test mass charging simulation of ASTROD I due to solar energetic particles at 0.5 AU
	Bao Gang; Liu Lei
刊名	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2010-06-01
卷号	53 期号:6 页码:1139-1143
关键词	charging simulation ASTROD I GEANT4 solar energetic particles
ISSN号	1674-7348
英文摘要	Maintaining the geodesic motion of the test mass is vital to ASTROD I space mission. However, the electrostatic charging of the test mass due to cosmic rays and solar energetic particles will result in Coulomb and Lorentz forces and consequently influence the test mass motions. To estimate the size of these effects, a credible simulation of test mass charging processes is critically required. Using the GEANT4 software toolkit, we have modeled the charging processes and predict how the ASTROD I test mass will charge positively at a rate of 217370 e(+)/s, due to solar energetic particles (SEPs) at similar to 0.5 AU caused by the largest SEPs event on 29, September, 1989. In addition to Monte Carlo uncertainty, an error of +/- 30% in the net charging rates was added to account for uncertainties in the spectra, physics and geometry models.
学科主题	Physics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	LISA ; DISTURBANCES ; MISSION
收录类别	SCI ; ISTP
语种	英语
WOS记录号	WOS:000278695200025
公开日期	2011-11-23
内容类型	期刊论文
源URL	[http://159.226.72.40/handle/332002/1071]
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,Liu Lei. Test mass charging simulation of ASTROD I due to solar energetic particles at 0.5 AU[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2010,53(6):1139-1143.
APA	Bao Gang,&Liu Lei.(2010).Test mass charging simulation of ASTROD I due to solar energetic particles at 0.5 AU.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,53(6),1139-1143.
MLA	Bao Gang,et al."Test mass charging simulation of ASTROD I due to solar energetic particles at 0.5 AU".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 53.6(2010):1139-1143.