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Heliophysics Technology and Instrument Development for Science

High Angular Resolution Low Energy Neutral Imager (LENI)

Completed Technology Project

Project Introduction

High Angular Resolution Low Energy Neutral Imager (LENI)
Low Energy Neutral Imager (LENI) Technical Objective: Demonstrate high-angular (2) resolution, high-sensitivity (±10-3 cm2 sr/pixel) ENA imaging in the 0.5 - 20 keV range as called for by the Heliophysics Decadal Survey by utilizing ultra-thin foils, 2D collimation, and a novel electron optical design. Supporting the Following Scientific Objectives for Future Missions Heliospheric Science Objective: Understand the spatial and temporal structure of the heliospheric boundary through high-temporal and high-angular resolution imaging over the 0.5 - 20 keV energy range (LENI addresses the more difficult, lower end of that range). Magnetospheric Science Objective: Understand how magnetospheric ions precipitate into and interact with the upper atmosphere by determining the angular and spatial distribution of backscattered energetic neutral atoms (ENAs). More »

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