I heard Quantum Magnetic Field effect can reduce bremsstrahlung using gigagauss magnetic field. But I can’t understand how can produce such intense magnetic field in the small machine. I know Japan’s LFEX facility that produced kilotesla magnetic field, but LFEX is very large machine. Is it really possible in the Dense Plasma Focus?
This topic was modified 2 years, 4 months ago by SJ Student.
The answer is becouse of very high current and narrow distance. Te get an idea of the strength take the formula for magnetic around a wires with a current I. B=I*2*10(exp-7)/(2*pi*r) r distance from the wires. The plasma focus is rather a coil then a straight pinch, but it gives you an idea what magnitude it can be. r is about a few microns and I more than MA. Say I = 1 MA and r = 1,0*10(exp-5) that would give B=300 000 Tessla wich is awful much. Just a very rough estimate.
Here we are. For a flat coil, which is the nearest kind of coil like the focus fusrion the magnetic field is B=μ*N*I/(2*r). Same figures again but N=1 gives
B=2*10(exp-7)*1/(2*1,0*10(exp-5))= 10 000 Tesla which still is a awful lot. It doesn’t matter how many turns the coil has. Either you take number of turns and current in each of them or all current and one lap, which I did, since sum of current is the only thing I know. I think that such kind of magnetic field, though it’s very strong is also very narrow. It will not change the direction of any ones compass.