Scientists at the University of Tokyo created the strongest magnet ever seen. They knew that it would, probably, explode but they never thought about reaching a record magnetic field.
Magnetic fields are measured in teslas, and this one reached a record 1,200 teslas, which was almost 400 times stronger than an MRI.
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“With magnetic fields above 1,000 teslas, you open up some interesting possibilities,” lead researcher Takeyama explained. “You can observe the motion of electrons outside the material environments they are normally within. So we can study them in a whole new light and explore new kinds of electronic devices. This research could also be useful to those working on fusion power generation.”
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The Scientists Predicted The Instrument To Explode But Were Shocked By The Results
These scientists published their study in the Review of Scientific Instruments on September 17. They used a technique called EMFC or electromagnetic flux-compression to achieve this feat.
This instrument generates a low-strength magnetic field of 3.2 teslas and was attached to a row of capacitors, generating 3.2 megajoules. This was a massive amount of energy.
These capacitors compressed the magnetic field into a tiny area rapidly.
Just as the scientists predicted, the field could not be compressed for long and eventually created a shockwave that ripped the instrument apart.
The scientists expected this to happen after 700 teslas, as it was built to withstand this certain amount, but they were shocked when it reached 1,200 before exploding.
The scientists at the University of Tokyo dropped an image, which explains this even better, from the IEEE institute.
“The University of Tokyo’s 1,200-Tesla magnetic field generator is powered by a bank of capacitors [on left, white] capable of storing 5 megajoules. The capacitors’ energy flows into the primary coil [bottom left, gray] and induces a counteracting current and magnetic field in the liner [orange]. This implodes the liner in 40 microseconds, compressing the magnetic field [bottom right].”
You can watch the video here and see what the explosion looked like.
Credits: University Of Tokyo