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DOI	10.1126/science.272.5263.846
	The Galileo probe mass spectrometer: Composition of Jupiter's atmosphere
	Niemann H.B.; Atreya S.K.; Carignan G.R.; Donahue T.M.; Haberman J.A.; Harpold D.N.; Hartle R.E.; Hunten D.M.; Kasprzak W.T.; Mahaffy P.R.; Owen T.C.; Spencer N.W.; Way S.H.
发表日期	1996
ISSN	0036-8075
起始页码	846
结束页码	849
卷号	272 期号:5263
英文摘要	The composition of the Jovian atmosphere from 0.5 to 21 bars along the descent trajectory was determined by a quadrupole mass spectrometer on the Galileo probe. The mixing ratio of He (helium) to H2 (hydrogen), 0.156, is close to the solar ratio. The abundances of methane, water, argon, neon, and hydrogen sulfide were measured; krypton and xenon were detected. As measured in the Jovian atmosphere, the amount of carbon is 2.9 times the solar abundance relative to H2, the amount of sulfur is greater than the solar abundance, and the amount of oxygen is much less than the solar abundance. The neon abundance compared with that of hydrogen is about an order of magnitude less than the solar abundance, lsotopic ratios of carbon and the noble gases are consistent with solar values. The measured ratio of deuterium to hydrogen (D/H) of (5 ± 2) × 10-5 indicates that this ratio is greater in solar-system hydrogen than in local interstellar hydrogen, and the 3He/4He ratio of (1.1 ± 0.2) × 10-4 provides a new value for protosolar (solar nebula) helium isotopes. Together, the D/H and 3He/4He ratios are consistent with conversion in the sun of protosolar deuterium to present-day 3He.
英文关键词	ammonia; carbon; helium; hydrogen; inert gas; nitrogen; oxygen; water; article; astronomy; atmosphere; mass spectrometry; microclimate; NASA Discipline Exobiology; NASA Discipline Number 52-10; NASA Program Exobiology; Non-NASA Center; NASA Discipline Exobiology; NASA Discipline Number 52-10; NASA Program Exobiology; Non-NASA Center; Ammonia; Atmosphere; Carbon; Extraterrestrial Environment; Helium; Hydrogen; Jupiter; Mass Spectrometry; Nitrogen; Noble Gases; Oxygen; Water
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244883
作者单位	Goddard Space Flight Center, Greenbelt, MD 20771, United States; Dept. Atmosph., Oceanic Space Sci., University of Michigan, 2455 Hayward Street, Ann Arbor, MI 48109, United States; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, United States; University of Hawaii, Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, United States; 12013 Remington Drive, Silver Spring, MD 20902, United States
推荐引用方式 GB/T 7714	Niemann H.B.,Atreya S.K.,Carignan G.R.,et al. The Galileo probe mass spectrometer: Composition of Jupiter's atmosphere[J],1996,272(5263).
APA	Niemann H.B..,Atreya S.K..,Carignan G.R..,Donahue T.M..,Haberman J.A..,...&Way S.H..(1996).The Galileo probe mass spectrometer: Composition of Jupiter's atmosphere.Science,272(5263).
MLA	Niemann H.B.,et al."The Galileo probe mass spectrometer: Composition of Jupiter's atmosphere".Science 272.5263(1996).