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Published May 1981 | Published
Journal Article Open

Randomly gapped wall stabilization for time-dependent magnetic confinement fields


An azimuthally continuous conducting wall cannot be used to provide stabilization for time-dependent magnetic confinement fields, such as the recently proposed traveling, compressing mirror [P. M. Bellan, Phys. Rev. Lett. 43, 858 (1979)], because, unlike static confinement fields, time-dependent confinement fields cannot penetrate such a wall. If the wall has a gap, then time-dependent fields can penetrate, but the gap produces an azimuthal asymmetry of the field which can cause enhanced particle losses. By splitting the wall into a large number of short insulated axial sections, each with a randomly oriented azimuthal gap, (i) the time-dependent confining field can penetrate the wall, (ii) wall stabilization is obtained, and (iii) azimuthal symmetry is maintained.

Additional Information

© 1981 American Institute of Physics. (Received 24 July 1980; accepted 6 February 1981) Support by an Alfred P. Sloan Fellowship is gratefully acknowledged.

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