But SDC doesn’t explain Earth

Although the radiation belts of the earth have 10’s MeV particles, either GeV’s precipitate into the center, or keV’s adiabatically escape, cooling off.
From a Mars vantage point, the Earth dipole is a weak source of keV particles and atoms.
Nor does adiabatic heating explain power law tails.
The Dipole is a better trap than accelerator.This has been known for 30 years at Earth, but doesn’t explain the origin of the Earth’s radiation belts, especially the outer electrons.
What then is the origin of the Earth’s MeV e- ?

Although the radiation belts of the earth have 10’s MeV particles, either GeV’s precipitate into the center, or keV’s adiabatically escape, cooling off.