Abstract
The paper reports on experiments investigating the plasma formation at the surface of exploding cylindrical copper and duralumin conductors with Ti coatings of different thickness in a magnetic field of up to 400 T. The experiments were performed on the MIG high-current generator at a current rise time of 100 ns and current amplitude of up to 2.5 MA. In a magnetic field of 350–400 T, the plasma on Ti-coated copper and duralumin conductors (conductivity ratio about 27 and 16, respectively) arose 30–40 ns later than on bare copper and duralumin. The instant of plasma formation for Ti-coated copper and duralumin conductors was respectively in 100 and 80 ns from the onset of current flow. Dependences of the instant of plasma formation at the conductor surface upon the Ti coating thickness are presented.
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