Theory of the night-time F-layer

Details Theory of the night-time F-layer Theory of the night-time F-layer

Feb 1968

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1968jatp...30..243s&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 30, no. 2, pp. 243-263

Physics

1

Scientific paper

The behaviour of the night-time F-layer, as it appears from the quantities hm, Ym and Nm (height of the F-layer maximum, layer thickness and maximum electron concentration), can be interpreted by electron losses, ambipolar diffusion and plasma drifts caused by electric fields in W-E and in N-S direction. The electric fields must be of the order of 5-10 V/km, if the loss coefficient and the ambipolar diffusion constant are chosen in accordance with laboratory measurements of the reaction rate for O+ + N2 --> NO+ + N and of the diffusion cross section for O+ in O. The theoretical method which gives these results proceeds from the time-dependent continuity equation and the appropriate equations of motion for the electrons, ions and neutral particles which form a system of coupled partial differential equations. This system is solved numerically by means of an electronic computer.

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