The Cassini Ion and Neutral Mass Spectrometer (INMS) Investigation

  title={The Cassini Ion and Neutral Mass Spectrometer (INMS) Investigation},
  author={J H Waite and William S. Lewis and Wayne T. Kasprzak and Vincent G. Anicich and Bruce Block and Thomas E. Cravens and G. G. Fletcher and Wing-H. Ip and Janet G. Luhmann and Ralph L. McNutt and Hasso Bernhard Otto Niemann and John K. Parejko and J. E. Richards and Rob Thorpe and E. Walter and Roger V. Yelle},
  journal={Space Science Reviews},
The Cassini Ion and Neutral Mass Spectrometer (INMS) investigation will determine the mass composition and number densities of neutral species and low-energy ions in key regions of the Saturn system. The primary focus of the INMS investigation is on the composition and structure of Titan’s upper atmosphere and its interaction with Saturn’s magnetospheric plasma. Of particular interest is the high-altitude region, between 900 and 1000 km, where the methane and nitrogen photochemistry is… Expand
Cassini Plasma Spectrometer Investigation
The Cassini Plasma Spectrometer (CAPS) will make comprehensive three-dimensional mass-resolved measurements of the full variety of plasma phenomena found in Saturn’s magnetosphere. Our fundamentalExpand
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Structure of Titan's ionosphere: Model comparisons with Cassini data
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Ion composition in Titan's exosphere via the Cassini Plasma Spectrometer I: T40 encounter
We investigate the complex interaction between Saturn's magnetosphere and Titan's upper ionosphere using ion data acquired by the Cassini Plasma Spectrometer (CAPS) during the T40 encounter. BoundsExpand
Investigating magnetospheric interaction effects on Titan's ionosphere with the Cassini orbiter Ion Neutral Mass Spectrometer, Langmuir Probe and magnetometer observations during targeted flybys
Abstract In the ∼6 years since the Cassini spacecraft went into orbit around Saturn in 2004, roughly a dozen Titan flybys have occurred for which the Ion Neutral Mass Spectrometer (INMS) measuredExpand
Ion 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 simulations
[1] The 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 INMSExpand
High-Altitude Production of Titan's Aerosols
Measurements with the Cassini Ion and Neutral Mass Spectrometer (INMS) and two Cassini Plasma Spectrometer (CAPS) sensors, the Ion beam Spectrometer (IBS) and the Electron Spectrometer (ELS), haveExpand


Cassini orbiter ion and neutral mass spectrometer instrument
The Cassini Orbiter Ion and Neutral Mass Spectrometer (INMS) is designed to measure the composition and density variations of low energy ions and neutral species in the upper atmosphere of Titan, inExpand
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Abstract Recent spectroscopic observations of the saturnian system by the Hubble Space Telescope have shown the surprising results that the icy satellites and the rings are copious sources of neutralExpand
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Saturn's magnetosphere contains plasma and neutral particles from Saturn's atmosphere, the rings, the inner icy satellites, and Titan. This paper reviews the observations of plasma and neutrals nearExpand
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Flowing plasma interactions with small bodies in the solar system are frequently complicated by the significant size of the ion gyroradii relative to the scale size of the body and the interactionExpand
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According to one possible picture of the Titan atmosphere interaction with Saturn's magnetosphere, newborn exospheric pickup ions may exhibit a marked asymmetry with respect to the corotation wakeExpand
Sputtering of water ice surfaces and the production of extended neutral atmospheres
Plasma and UV photon bombardment of an icy object in the outer solar system can lead to ejection of atoms and molecules from the surface which can, in turn, produce an extended neutral atmosphere. WeExpand
Magnetospheric ion bombardment profiles of satellites - Europa and Dione
Abstract The spatial dependence across a satellite surface of the ion bombardment/implantation rate is calculated for satellites imbedded in planetary magnetospheric plasmas. These bombardmentExpand
Detection of the hydroxyl radical in the Saturn magnetosphere
THE magnetosphere in the vicinity of the orbits of Saturn's icy satellites consists of a low-density plasma, in which the electrons are an order of magnitude cooler than the accompanying heavy ions1.Expand