urn:nasa:pds:cassini-caps-water-group-ion:document:kim-jgr-2026 1.0 1.24.0.0 Product_Document 2026 10.1029/2025JA034738 Published Paper containing a description of the data in the Global Survey of Individual Water Group Ion Properties in Saturn's Magnetosphere: Cassini CAPS Observations Data Bundle. NASA Funded by the 2020 NASA ROSES CDAP, grant number 80NSSC21K0530. Thomas Kim 0000-0001-6282-0803 1 Los Alamos National Laboratory https://ror.org/01e41cf67 2026-07-31 1.0 Initial version. Cassini-Huygens Mission urn:nasa:pds:context:investigation:mission.cassini-huygens document_to_investigation Cassini Orbiter Host urn:nasa:pds:context:instrument_host:spacecraft.co is_instrument_host Cassini Plasma Spectrometer Instrument urn:nasa:pds:context:instrument:caps.co is_instrument Saturn Planet urn:nasa:pds:context:target:planet.saturn document_to_target Solar Wind Plasma Stream urn:nasa:pds:context:target:plasma_stream.solar_wind document_to_target Enceladus Satellite urn:nasa:pds:context:target:satellite.saturn.enceladus document_to_target Tour Pre-Huygens Huygens Descent Outer Cruise Tour Solstice Mission Equinox Mission urn:nasa:pds:cassini-caps-water-group-ion:data::2.2 document_to_data Comprehensive characterization of water group ion composition and distributions in Saturn's magnetosphere with Cassini plasma spectrometer data 10.1029/2025JA034738 Kim,T.K.,Reisenfeld,D.B.,Wilson,R. J.,Smith,H.T.,Woodson,A.K., Allegrini,F.,etal.(2026). Comprehensive characterization of water group ion composition and distributions in Saturn's magnetosphere with Cassini plasma spectrometer data. Journal of Geophysical Research: Space Physics, 131, e2025JA034738 2026-04-15 Key Points: 1) Enceladus‐origin OH+, H2O+, and H3O+ dissociate within 5–10 Saturn radii, leaving O+ and H+ dominant 2) Ionosphere‐plasma coupling is stron gest at 5–10 Saturn radii, where flow speeds reach about 80% of rigid corotation 3) O+ions make up nearly 70% of Saturn's thermal plasma population across the magnetosphere out to 16 Saturn radii Comprehensive characterization of water group ion composition and distributions in Saturn's magnetosphere with Cassini plasma spectrometer data, PDF edition English 1 kim-jgr-2026.pdf 2026-07-30 12776595 c80f970a8729a8cabca0a97da4462b67 PDF/A