New Magnetic Field Record: 1200 Tesla [video]
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Although under the description it says 'First Published: 25 Sep 2018'.
The record for a man-made stable (not explosive) magnetic fields is 45T.
The record for detected cosmic magnetic fields is 1,600,000,000T.
I don't think it's supposed to do that. ;-)For EM fields(same thing?) you can build a flux compression generator, a coil of wire around an explosive rod. run a current in the wire to form a magnetic field, as the explosive explodes from one end to the other the field compresses to form a high energy pulse.
https://en.wikipedia.org/wiki/Explosively_pumped_flux_compre...
edit: As best I understand, it is similar to an explosively formed field but uses one magnet to compress the other. the explosion was halfway expected, the compressed magnet was expected to tear itself apart, however the field was higher than expected and damaged the enclosure.
Either that or you've made a mistake somewhere. :D
/ducks