Low Energy Neutral Atom (LENA)

• LENA Observations

  • Neutral atom composition and energy-resolved images over three energy ranges: 10-500 eV

• Measure Requirements

  • Angular Resolution: 8°x 8°
  • Energy Resolution (delta E/E): 0.8
  • Composition: distinguish H and O in ionospheric sources, interstellar neutrals and solar wind.
  • Sensitivity: Effective area > 1 cm²

• Storm/substorm Observations

  • Image Time: 2 minutes (resolve substorm development) generating 720 images/day

• Derived Quantities:

  • Neutral atom composition and energy of the Auroral/Cleft ion fountain
  • Ionospheric outflow

High Altitude

Low Altitude

Previous slide

Next slide

Back to first slide

View graphic version