I. Introduction
The basic work principle of radio frequency explosive magnetic flux compression generator (RF FCG) is that: a RF FCG converts the chemical energy stored in the explosives into electromagnetic energy by compressing the magnetic field between the stator coils and the armature which is driven by explosives. How to use the chemical energy of the explosive charges sufficiently and increase the electromagnetic energy transfer efficiency are the main factors of measuring working performance of RF FCG. For helical explosive magnetic flux compression Generator (HFCG), some methods that can increase electromagnetic energy transfer efficiency have been proposed by researchers. These methods, such as winding stator coil exponentially[1], controlling assembly tolerance[2],[3], indirectly charging[4],[5] and adopting multi-layer stator coil[6], are applied to RF FCG.