PLAsma and SupraThermal Ion and Composition
To study coronal Solar Wind and solar wind-heliospheric processes by ions measurement
Assemblage of instruments to: 1) measure the distribution functions of solar wind protons and alpha particles with a time resolution of about one minute; 2) provide, on at least five minute resolution, the elemental composition, charge state distribution, kinetic temperature, and velocity of the more abundant solar wind heavy ions (e.g., C, O, Ne, Mg, Si, and Fe); and 3) measure the distribution functions of suprathermal ions H through Fe. Energy-per-charge range: 0.3-100 keV/e.
Part of an instrument package for solar activity observation
Sun pointing from two variable positions along the Earth’s orbit around the Sun in order to implement stereoscopy
Coverage / Cycle
Full interplanetary space
Flown on an R&D satellite
2007-01-21 to 2014-10-01
Satellites this instrument is flying on
Note: a red tag indicates satellites no longer operational, a
green tag indicates operational satellites, a blue tag indicates
Solar and space environment monitors Energetic particle spectrometer
No WIGOS subcomponents have been defined.
Primary mission objectives
Alpha particles differential directional flux Heavy ion angular flux energy and mass spectrum Heavy ion flux energy and mass spectrum Proton differential directional flux Secondary mission objectives Solar wind temperature Solar wind velocity Show all Show fewer
Tentative Evaluation of Measurements
The following list indicates which measurements can
retrieved from this category of instrument. To see a full Gap Analysis by Variable,
click on the respective variable.
Note: table can be sorted by clicking on the column headers