For some applications of magnetic flux compression generators, shorter pulse
widths, with associated higher voltages and power levels, are required. We
have developed a family of small, tapered stator generators that begin to
address these requirements. Specifically, the three versions of these FCGs
developed use stator angles of 100, 120, and 130 with respect to the
generator axis. These three respective angles resulted in increasingly
larger phased closure velocities. The armature diameter is 2.54 cm, and the
armature expansion ratio is about 2:1. The shortest dI/dt pulse, in terms of
Full-Width-Half-Maximum (FWHM), produced is 398 ns in the current
derivative. The peak value for dI/dt is about 3.5 × 1010 amps/sec.