Negative ion chemistry in the coma of comet 1P/Halley

• Published in: Meteoritics & planetary science Vol. 49; no. 1; pp. 21 - 27
• Main Authors: Cordiner, M. A., Charnley, S. B.
• Format: Journal Article
• Language: English
• Published: Hoboken Blackwell Publishing Ltd 01.01.2014; Wiley Subscription Services, Inc
• Subjects: Analyzers; Anions; Comet heads; Density; Electron attachment; Halley's comet; Mathematical models; Spacecraft

Negative ions (anions) were identified in the coma of comet 1P/Halley during in situ Electron Electrostatic Analyzer measurements performed by the Giotto spacecraft in 1986. These anions were detected with masses in the range 7–110 amu, but with insufficient mass resolution to permit unambiguous ide...