The energy spectra of anomalous oxygen at the time of two successive solar minima

Abstract The energy spectra of anomalous oxygen have been determined from nuclear track detectors exposed aboard the Earth-orbiting satellites and altitudes ranging from ∼250–400 km in two consecutive solar minimum periods of 1986–1987 and 1994–1995 with opposite polarity of the solar magnetic field. A comparison of the spectra shows no contradiction to current drift models.