Meteoric magnesium ions in the Martian atmosphere

摘要: From a thorough modeling of the altitude profile meteoric ionization in Martian atmosphere we deduce that persistent layer magnesium ions should exist around an 70 km. On basis estimated meteoroid mass flux density, peak ion density ∼ 10 4 cm -3 is predicted. Allowing for uncertainties all model parameters, this value probably within order magnitude correct density. Of these most sensitive to which determines source function Mg from ablating meteoroids. Unlike terrestrial case, where metallic production dominated by charge-exchange deposited neutral with ambient ions, + produced predominantly photoionization. The low ultraviolet absorption makes Mars excellent laboratory study ablation. Resonance lines cannot be seen spectra meteors may visible surface observatory highlands.