Fig. 3
Electron impact ionisation cross sections of CO2 and CO producing CO+(B2Σ+) which are taken from Ajello (1971) and Arqueros & Campos (1981), respectively. Modelled steady state suprathermal electron flux (red solid curve) at an altitude of 130 km using MCD neutral density profile and for SZA of 75° is plotted with a scale on the right y-axis.
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