Abstract
A change in the spiralling-mirroring domain of trapped electrons and a consequent change in the precipitation to ionospheric heights result from the superposition of a longitudinal electric field along the direction of the lines of force of the Earth's magnetic field. A previous assessment of the extent of this effect is here extended to consider precipitation from a model for the distorted magnetosphere. A comparison is made between the relative precipitation increases from the dayside field, the nightside field and the symmetrical (or dipole) field.
