Mandt, Kathleen EGell, David APerry, MarkWaite, J HCrary, Frank AYoung, DavidMagee, B AWestlake, Joseph HCravens, ThomasKasprzak, WayneMiller, GregWahlund, Jan-ErikAgren, KarinEdberg, Niklas J THeays, AlanLewis, BrentonGibson, Stephende la Haye, VLiang, Mao Chang2015-12-100148-0227http://hdl.handle.net/1885/68408The Cassini Ion Neutral Mass Spectrometer (INMS) has measured both neutral and ion species in Titan's upper atmosphere and ionosphere and the Enceladus plumes. Ion densities derived from INMS measurements are essential data for constraining photochemicalAuthor/s retain copyrightKeywords: ionic composition; ionosphere; mass spectrometry; photochemistry; satellite mission; TitanIon densities and composition of Titan's upper atmosphere derived from the Cassini Ion Neutral Mass Spectrometer: Analysis methods and comparison of measured ion densities to photochemical model simulations201210.1029/2012JE0041392016-02-24