oxygen ions of ionospheric origin

Keika, K., Seki, K., e, M., Machida, S., Miyoshi, Y., Lanzerotti, L., et al. (2016). Storm time impulsive enhancements of energetic oxygen due to adiabatic acceleration of preexisting warm oxygen in the inner magnetosphere. Journal Of Geophysical Research: Space Physics, 121, 7739-7752. http://doi.org/10.1002/2016JA022384 (Original work published August 2016)