By Barus C.

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SLlPPAGE IN THE NON-CONDUCTING ATMOSPHERE Consider the following problem. Imagine that a stationary, perfectly conducting plane is located at z = 0 and that a similar plane moving with velocity v(t) is located at z= h, as shown in Figure 5. Between these two plates is a non-conducting region, taken to represent the atmosphere, which is occupied by a uniform, vertical magnetic field. The region z> h is intended to represent the ionosphere and the magnetosphere, and z < 0 represents the solid earth.

38) (39) Box. Since the lower conducting sheet is stationary, the electric fie1d at z

In its pi ace is left the abandoned proton with an energy of the order of 1 eV - depending on the value of the thermal energy. The formula for the lifetime of the charge exchange process is fairly simple: a proton moving through a neutral hydrogen background of N atoms per cubic centimeter has a life expectancy of (66) The same expression applies for a neutral atom passing through a background of protons - the process is reversible. Equation (66) is a crude approximation but gives representative values for proton energies extending from about 400 eV to 40 keV.

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