Flows of beta-electrons within the magnetic plasma cavities: Calculation and comparison with experiment

A nuclear explosion in the upper atmosphere generate a cavity filled with radioactive plasma of high conductivity, from this superseded the geomagnetic field. Hundredths of a second cavity is filled with relativistic beta-electrons. The flux density of beta-electrons in the cavity j_β (1/sm^2.s) is determined by its activity, the size of the cavity and the cavity flow coming out of beta-electrons. The first method of calculation j_β with a detailed calculation of the beta-electrons in the nonuniform geomagnetic field is given in [1]. It is applicable for relatively small size of the plasma cavity (R ≤ 10 km), which is formed when the energy release at altitudes of h ≤ 100 km. The operation ≪Starfish≫ t = 1.2 in the cavity with a diameter across the geomagnetic field was 680 km away and 1,840 km of the field. And the technique [1] gave an order of magnitude too low values of the flux inside the cavity in comparison with the experiment [2], due to overestimation of the dimensionless function δ(R), which determines the yield of beta-electrons of the cavity.