Quasi-trapped electron and positron fluxes – read more

Figure 1 shows the quasi-trapped positron to electron ratio measured between 80 MeV and 8 GeV (L shell < 1.2, B > 0.23 G). The large value for the e+/e  flux ratio observed for energies from 300 to 800 MeV can be explained by an East-West asymmetry of the geomagnetic cutoff.

Figure 2 and Figure 3 show the differential energy spectrum of quasi-trapped electrons and positrons, respectively.