BackForward Variable: Energetic Neutral Atom (ENA)

Definition
Full name Energetic Neutral Atom (ENA)
Definition Neutral atoms resulting from the capture of free electrons by positively ionized nuclei of the solar wind.  Once neutralised, the particles are no longer deviated by the interplanetary magnetic field, and still move very fast, travelling in an exact straight line.
Measuring Units Particles·(cm2 s sr MeV)-1 Uncertainty Units %
Horizontal Res Units Vertical Res Units
Stability Units (Stability /decade)

 

Comment: By imaging ENA, the boundaries of the heliosphere and the magnetosphere can be depicted. ENAs are found everywhere in space and are directly observable at energies from 10 eV to more than 1 MeV, classified into low, medium and high.
Last modified: 2017-04-21
Applied in OSCAR/Space Gap Analysis: Yes
Classification
  • Domain: Outer Space
    • Sub-domain: Energetic particles and solar wind
      • Variable: Energetic Neutral Atom (ENA)
        • Measured in Layers:
          • Helio
          • Magnet
  • Cross-cutting themes:
  • Earth System Application Categories and its related Application Areas:

Requirements defined for Energetic Neutral Atom (ENA)  (0)

This tables shows all related requirements. For more operations/filtering, please consult the full list of Requirements
Note: In reading the values, goal is marked blue, breakthrough green, threshold orange
Application-dependent Technical Priority (ATP) Magenta and Relative priority of the attributes Red

Id Variable Layer App Area ATP Uncertainty Layer/s Quality Coverage Quality Stability / decade Hor Res Ver Res Obs Cyc Timeliness Coverage Conf Level Val Date Source General Comment Application Area Comment Horizontal Coverage Comment Observation Comment Performance Comment