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Geomagnetic Field Perturbations Due To Trapped Particles by J.R. Apel; S.F. Singer is a book available to read on EtoBox.

What is Geomagnetic Field Perturbations Due To Trapped Particles about?

The charged particles trapped in the earth's magnetic field give rise to currents flowing in the space about the earth. These currents, which cause perturbations to the geo magnetic field, are of two types: a magnetization current arising from the spiraling motion of the particles about the lines of force; and a westward ring current having its origin in the azimuthal drift motion of the charges. The theory derived here permits the calculation of mag netic perturbations as seen by a space vehicle proceeding radially outward in the equatorial plane of the earth. Two radiation belt models are used as examples. For the outer belt, which peaks at 25,000 km geocentric, a maximum current density of 10" amp/m flows. The total current of 5x10 amp leads to a field perturbation of the order of -100 gamma at the center of the belt. The calculations appear capable of explaining the mag netometer measurements of four space vehicles. The gross be havior and the order of magnitude of the perturbations are reproduced, but their detailed structure cannot be deduced without more detailed knowledge of the distribution of the particles in the belt.

Author

J.R. Apel; S.F. Singer

Published

1961

Language

EN