In the course of a more general study on the influence of initial plasma conditions on plasma evolution under magnetic compression it was decided to analyse the mechanism responsible for the production of gamma rays observed and measured while the compression field was being set up.In the first part we tried to measure the time of diffusion and the depth of penetration of the electric field induced by variation of the compression field. It was found that the diffusion of this azimuthal electric field in the column of plasma produced by reflex discharge is quasi-complete and instantaneous. From the very commencement of compression, therefore, there exist two crossed fields (B0 static initial and E0 azimuthal induced), and the presence of these fields is a necessary and sufficient condition for the acceleration of electrons in a transverse plane. This layer of quasi-relativistic electrons produced through improved conductivity makes it possible to trap the static magnetic field existing at the moment of their formation.In the second and principal part of this report, the equations of motion are solved, starting from the initial conditions of experimental physical reality. The theoretical energies obtained by this mechanism are in agreement with the energy of the measured gammas.Finally, the third part gives experimental results of gamma-ray and u.h.f.-radiation measurements and photographic recordings.
Contribution to the theory of magnetic pumping of an inhomogeneous collisional plasma