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Updated: Jul 5, 2026

Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Secondary electron emission from distributed ion scattering off surfaces for space instrumentation
P Devoto1, J-L Médale, J-A Sauvaud
1Centre d'Etude Spatiale des Rayonnements, Université Paul Sabatier, CNRS, 9 av. du Colonel Roche, BP 44346, 31028 Toulouse Cedex 4, France. pierre.devoto@cesr.fr
Abstract:
We present an alternative method for generating start electrons for time of flight (TOF) space plasma analyzers. The technique presented here takes advantage of the processes occurring during the scattering of the particles off a surface, i.e., kinetic electron emission. The use of a thin microchannel plate as a scattering surface allows us to distribute this surface along a single plane normal to the particle velocity. The uncertainty on the TOF distance is thus minimized, allowing a greater mass resolution. The first tests carried out showed that a mass resolution of 10 for a beam energy of 10 keV is easily reachable.
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