The motion of the individual charged particles in a magnetic trap is discussed. The trap is formed by an axially-symmetric field upon which a transverse field produced by straight rods carrying currents which flow in alternate directions is superimposed. These rods are arranged around a cylinder parallel to the axis of the trap. It is shown that if particles are injected into such a trap in a definite way provided their magnetic moment is conserved they become trapped within it. The magnetic drift of the particles which arises in such a system inhibits the development of flute instability of the plasma boundary. Results of calculations carried out in the drift approximation, and by numerically integrating the exact equations of motion, are confirmed experimentally.
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Balebanov et al. (1963) studied this question.