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Density profiles of liner-driven implosions at Pegasus II

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13 Author(s)
Morgan, D.V. ; Los Alamos Nat. Lab., NM, USA ; Adams, P.J. ; Carpenter, B. ; Guzik, J.
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Efforts have been undertaken to determine the one-dimensional density profile of liner-driven cylindrical targets from analysis of the transverse radiographs of liner-driven implosion experiments at Pegasus II. The technique reported here uses forward modeling to determine the density of the different materials in a cylindrically symmetric target after liner impact. The material density was determined by performing a least-squares fit of a model function in the cylindrical geometry to match the horizontal line-out of the radiographic intensity data. Estimates of the effective X-ray spectrum are required for this analysis because of the strong energy dependence of the X-ray interaction cross sections with the different materials in the experiment. The implosions described in this report maintain good cylindrical symmetry. The analysis is performed with inexpensive, commercially available software. In this work, the density profiles are determined for two separate experiments, designated DH-5 and LLNL-3.

Published in:

Pulsed Power Conference, 1999. Digest of Technical Papers. 12th IEEE International  (Volume:2 )

Date of Conference:

27-30 June 1999