why can not we control fusion
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The only known way to control a fusion reaction is with an extremely strong and shaped/focused magnetic field. With today’s technology we cannot yet make it strong enough. It breaks up in milliseconds after the reaction, stopping the reaction.
If the reaction is sustained for more than a few miliseconds, the heat generated would start to melt the containment vessel. This is also a result of a not strong enough magnetic field.
The state of electronic controls are not fast enough to control the magnetic field to counter fusion fluctuations when the fuel needs replenishing for a sustained reaction. The fuel is consumed in micro-seconds and needs “refueling” thousands of times per second.
And up to now, a fusion reaction needs more energy input than it produces.
Not to say it can’t happen, it will take time and $$$$. When it works, it will transform energy production, many times over what nuclear fission was supposed to do.
If the reaction is sustained for more than a few miliseconds, the heat generated would start to melt the containment vessel. This is also a result of a not strong enough magnetic field.
The state of electronic controls are not fast enough to control the magnetic field to counter fusion fluctuations when the fuel needs replenishing for a sustained reaction. The fuel is consumed in micro-seconds and needs “refueling” thousands of times per second.
And up to now, a fusion reaction needs more energy input than it produces.
Not to say it can’t happen, it will take time and $$$$. When it works, it will transform energy production, many times over what nuclear fission was supposed to do.
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