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Ulysses olar Wind Ion Composition Spectrometer (SWICS) Full Resolution Matrix Rate Data

Metadata Updated: April 10, 2026

The Ulysses/SWICS instrument is a mass spectrometer combining an electrostatic analyzer with post acceleration, followed by a time-of-flight and energy measurement. The instrument covers an energy per charge range from 0.16 to 59.6 keV/e with a time resolution of about 13 minutes. SWICS is designed to determine uniquely the elemental and ionic-charge composition, the temperatures and mean speeds of all major solar wind ions, from H through Fe. For more information see G. Gloeckler, J. Geiss et al., Astron. Astrophys. Suppl. Ser. 92, 267-289, 1992. These data consist of all 18 Matrix Rates (MR) as a function of energy per charge (E/q) and of time. Each MR represents a specific element in one or several ionization states, but it may also contain significant contributions from neighbouring elements due to spillover. The MRs are given in units of count rates only. SAPRO (SWICS Archive Processor) software can be used both to convert the MR count rates to physical units (differential flux, phase space density), to correct for spillover between different MRs, and to obtain kinetic parameters (density, speed, thermal speed) of selected ions (to be used with caution).

Access & Use Information

Public: This dataset is intended for public access and use. License: See this page for license information.

Downloads & Resources

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Dates

Metadata Created Date March 13, 2026
Metadata Updated Date April 10, 2026

Metadata Source

Harvested from NASA Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date March 13, 2026
Metadata Updated Date April 10, 2026
Publisher NASA Space Physics Data Facility (SPDF) Data Services
Maintainer
Identifier /SDE/SPASE_JSON/|856c9e8ca2ee7eaffd1a3eb6734503e3
Data Last Modified 2026-04-06
Category Heliophysics
Public Access Level public
Bureau Code 026:00
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id b0901ff4-1863-476f-b950-1e219c9d1b69
Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
Harvest Source Title NASA Data.json
License https://www.usa.gov/government-works
Program Code 026:000
Source Datajson Identifier True
Source Hash 600c3e6a4fcc2bdf1113b4a8a91f5e9a8b3e2e6adc3bbd3a7ace8c0cbc35d8b2
Source Schema Version 1.1

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