ENA emission from nearly-mirroring magnetospheric ions interacting with the exosphere
作者： E.C Roelof
DOI: 10.1016/S0273-1177(97)00692-3
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摘要: Abstract Energetic neutral atom (ENA) emission is markedly brightest at the lowest altitudes, because it there that density of ambient neutrals strongly increases with decreasing height. Analytic expressions are derived in approximation single charge-exchange and ionization collisions between energetic ions exospheric neutrals. The computer simulation ENA intensities from low heretofore requiring Monte Carlo calculations, thus reduced to a numerical integral for each line sight. attenuation incident by charge exchange depends on mirror force, whereas emergent line-of-sight geometry imager. altitude maximum strong function ion pitch angle given L value field
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