Energy spectra of geomagnetically trapped oxygen ions

In a series of COSMOS satellite flights plastic nuclear track detectors hav e been exposed in low-earth orbits to monitor anomalous cosmic rays (ACR) a t energies below 25 MeV/nuc. The analysis of energy spectra has now been ex tended to energies up to 40 MeV/nuc for two exposures aboard COSMOS 2260 in 1993 and COSMOS 2311 in 1995. Our data on trapped ACR (TACR) oxygen energy spectra might indicate the influence of energy-dependent stripping probabi lities and the presence of multiply charged ACR oxygen at high energies as reported by latest SAMPEX observations.