An insulator-metallic phase transition cascade for improved electromagnetic flux-compression in /spl theta/-pinch geometry
2004
During an initial phase of an ongoing research program at Loughborough University, ultrahigh magnetic fields of up to 300 T (3 MG) have been generated. These have been produced using only 63 kJ from a fast capacitor bank to implode an aluminum liner in a /spl theta/-pinch geometry, and 14.7 kJ from a slow capacitor bank to provide an initial magnetic field. The paper analyzes various ways of improving both the /spl theta/-pinch magnetic flux-compression efficiency and its reproducibility. As a practical illustration, experimental evidence is presented to demonstrate the benefits obtained from the use of an insulator-metallic phase transition cascade made from powder aluminum.
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