This module incorporates all known physics into an accurate calculation of the geomagnetic shielding at a point or along an orbit. It is a breakthrough in radiation effects modeling. Using it you will obtain, for the first time, the correct shielding of galactic cosmic radiation and solar particles in your spacecraft orbit. All orbits will be affected and the module will be of special interest for computing radiation effects in highly elliptical, geostationary and high inclination orbits.

It works by tracing the trajectories of all species of charged particles. An example is shown on this page. (The image was created with [226] Charged Particle Trajectories and [207] Instant Graphics.)

Included in the computation are:

• Realistic magnetic field model at the exact mission date
• All possible particle arrival directions (not just vertical)
• L value cutoff to account for magnetic field turbulence at high altitudes
• Absorption in the earth's atmosphere
• All particle species
• All particle energies

As you might expect for such a complex computation, this requires lots of CPU time; however, it is practical for most radiation assessment tasks.