Oxygen ions observed near Saturn's A ring

J. H. Waite, T. E. Cravens, W. H. Ip, W. T. Kasprzak, J. G. Luhmann, R. L. McNutt, H. B. Niemann, R. V. Yelle, I. Mueller-Wodarg, S. A. Ledvina, S. Scherer

研究成果: 雜誌貢獻期刊論文同行評審

55 引文 斯高帕斯(Scopus)

摘要

Ions were detected in the vicinity of Saturn's A ring by the Ion and Neutral Mass Spectrometer (INMS) instrument onboard the Cassini Orbiter during the spacecraft's passage over the rings. The INMS saw signatures of molecular and atomic oxygen ions and of protons, thus demonstrating the existence of an ionosphere associated with the A ring. A likely explanation for these ions is photoionization by solar ultraviolet radiation of neutral O2 molecules associated with a tenuous ring atmosphere. INMS neutral measurements made during the ring encounter are dominated by a background signal.

原文???core.languages.en_GB???
頁(從 - 到)1260-1262
頁數3
期刊Science
307
發行號5713
DOIs
出版狀態已出版 - 25 2月 2005

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