Abstract
A detailed study of the spatially and temporally resolved continuum emission from imploding thin film plasmas was performed as a probe of mass-flow in the discharge tube. The effects of plasma tube diameter, charging voltage, and circuit inductance were investigated with respect to the implosion rate as well as the spatial distribution of plasma within the discharge tube. Implosion times were found to depend strongly on the discharge d I d t —implosion during the first current half-cycle of the discharge is typical for the discharges investigated. Less energetic discharges (under about 400 J) and discharges with added inductance (with d I d t of about 100 amps/μs and under) resulted in very long implosion times, sometimes lasting into the second current half-cycle of the discharge. Implosion velocities are similar to those reported for unconfined or exploding thin film plasmas, ruling out any significant magnetic compression component to the implosion process.
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