The explosively pumped FCG is the most mature technology applicable to bomb designs. The FCG was first demonstrated by Clarence Fowler at Los Alamos National Laboratories (LANL) in the late fifties [FOWLER60]. Since that time a wide range of FCG configurations has been built and tested, both in the US and the USSR, and more recently CIS.

FOWLER60 - C. M. Fowler, W. B. Garn, and R. S. Caird, Production of Very High Magnetic Fields by Implosion, Journal of Applied Physics, Vol. 31, No. 3, 588-594, March, 1960.