Abstract

Experiments to generate large magnetic fields by flux compression have been performed in a z‐pinch. Two z‐pinch plasma configurations were investigated: (i) a novel plasma liner developed from a thin cylindrical soap film and (ii) a conventional gas pinch formed in a uniform cylinder of gas. The apparatus, experiments and the results obtained are described in this paper. A comprehensive investigation of the gas pinch shows that an optimum set of conditions exists, for given discharge parameters, for obtaining the highest magnetic field. Using a current of 500 kA with τ1/4 = 2 μs, an initial magnetic field of 0.3 T has been compressed to 38 T, a compression ratio of over 120. The scaling of the attainable peak magnetic field with discharge parameters has been studied and compared with simplified models of the compression.

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