| 摘要 |
PURPOSE:To carry out the magnetic confinement of plasma without using a magnet by providing double helical coils in such a way that a discharge container is covered with a helical magnetic field and making a current flow in the reverse direction. CONSTITUTION:A helical coil 9 formed with double helical coils is placed on the outside of a discharge container 8 instead of a magnet and a current I is made flow in the reverse direction, to generate a helical magnetic field in a discharge room. Ionized plasma produced in the discharge room is recombined on the wall surface of the discharge container 8 and either disappears or is reflected. The wall surface of the discharge container 8 is covered with the helical magnetic field, to move electrons by means of the line of magnetic force, reducing a recombining zone. Without the use of a magnet, the problem of life due to a demagnetiziation characteristic can be eliminated.
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