Table · dataset · 2026
Wind SMS Suite, SupraThermal Ion Composition Spectrometer (SMS/STICS) Alpha Particle Distribution Function and Differential Flux, Magnetosphere, Level 2 (L2), PT3M Data
Listed in NASA Data Portal
The Suprathermal Ion Composition Spectrometer (STICS) is a Time of Flight (TOF) Plasma Mass Spectrometer, capable of identifying Mass and Mass per Charge for incident Ions up to 200 keV/q.
Description
It uses an Electrostatic Analyzer to admit Ions of a particular Energy per Charge (E/Q) into the TOF Chamber. The E/Q Voltage is stepped through 32 Values, sitting at each Value for approximately 24 s, to measure Ions over the full E/Q Range of 6 keV/q to 200 keV/q.
Ions then pass through a Carbon Foil and TOF Chamber, before finally impacting on a Solid-State Detector (SSD) for Energy Measurement. STICS combines these three Measurements of E/Q, TOF and Residual Energy, producing PHA Words. This Triple-Coincidence Technique greatly improves the Signal to Noise Ratio in the Data.
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Measurements of E/Q and TOF without Residual Energy also produce PHA Words. These Double-Coincidence Measurements are characterized by better Statistics since Ions whose Energy does not allow them to be registered by the SSD can still be counted in Double-Coincidence Measurements. However, Ion Identification in Double-Coincidence Measurements are limited to a select Number of Ions that are well separated in E/Q - TOF Space.
The STICS Instrument provides full 3D Velocity Distribution Functions, through a Combination of multiple Telescopes and Spacecraft Spin. The Instrument includes three separate TOF Telescopes that view three separate Latitude Sectors, as shown in Figure 1. In addition, the WIND Spacecraft Spins, allowing the three Telescopes to trace out a nearly 4π sr Viewing Area.
The Longitudinal Sectors are shown in Figure 2. The Solar Direction is in Sectors 8-10 while the Earthward Direction is in Sectors 0-2.
Links
Get the data
- Resource spdf.gsfc.nasa.gov/pub/data/wind/sms/l2/stics_cdf/he2plus_magnetosphere ↗
download · from data nasa gov
- Resource cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=WI_L2-HE2PLUS-3MIN_SMS-STICS-MAGNETO… ↗
download · from data nasa gov
- Resource cdaweb.gsfc.nasa.gov/hapi ↗
download · from data nasa gov
- Resource space.umd.edu/wind ↗
download · from data nasa gov
- Resource space.umd.edu/wind/Data.html ↗
download · from data nasa gov
- Resource wind.nasa.gov/inst_info.php ↗
download · from data nasa gov
- Resource helio.data.nasa.gov/dataset/Wind_SMS_STICS_DistributionFunction_Level2_Magnetosphe… ↗
download · from data nasa gov
- Resource hpde.io/NASA/NumericalData/Wind/SMS/STICS/DistributionFunction/Level2/… ↗
download · from data nasa gov
- Resource spdf.gsfc.nasa.gov/pub/data/wind/sms/l2/stics_cdf/he2plus_magnetosphere ↗
download · from data nasa gov
Where it is published
- NASA Data Portal dataset page data.nasa.gov/dataset/wind-sms-suite-suprathermal-ion-composition-spectromet… ↗
landing page · from data nasa gov
- DOI doi.org/10.48322/kc69-5m68 ↗
DOI / persistent id · from data nasa gov
Catalogue records · 1
- CKAN API data.nasa.gov/api/3/action/package_show?id=d9f43f69-493c-4e43-8753-321a350d4… ↗
metadata API · from data nasa gov
Topics
- From keywords
- Astronomy & Astrophysics · Earth & Environmental Science · Ocean & Atmospheric Science · Physics
- Inferred from text
- Longitudinal study 65% · Space sciences 69%
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Data Portal | d9f43f69-493c-4e43-8753-321a350d44d2 | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].anzsrc:group:5109 | enrichment · data nasa gov | taxonomy-embedding@1.0.0 | title+keywords+description (69%) |
| concepts[field].local:field:astronomy | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:ocean-atmospheric | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[field].local:field:physics | mapping · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| concepts[method].local:method:longitudinal-study | enrichment · data nasa gov | keyword-concept-rules@1.0.0 | title+description (65%) |
| created_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| description | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /notes |
| license_text | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| publication_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 | |
| title | source · data nasa gov | connector:data_nasa_gov@1.0.0 | /title |
| updated_date | source · data nasa gov | connector:data_nasa_gov@1.0.0 |