A method that decreases useless magnetism pressure to amplify the power of MFCG(magnetic flux compression generator) is proposed, in which the charging loop is cut off after initial current is provided.By code MFCG(V),the simulation demonstrates effectiveness of the method.

The mesh dividing in an irregular domain is very difficult for computing the pulsed guide magnetic field eddy currents. A method of coordinate transformation is proposed which mappes the irregular domain to a regular domain. In the new domain it is convenient for the dividing of meshes. By using this method some satisfied computational results are obtained.

In this paper, the internal electromagnetic pulses produced by the prompt-γ photons wore calculated by self-consistent and non-self-consistent mothod respectively in three dimension rectangle cavity of the matel. The computational results were analyzed. Under the condition that the electric field is weak and the cavity is small, the results obtained by self-consistent method coincide with the results by the non-self-consistent.