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Emission and absorption spectroscopy of X-ray-heated plastic foils

Published online by Cambridge University Press:  09 March 2009

I.B. Földes  and
K. Eidmann
K. Eidmann
Affiliation:
Max-Planck-Institut für Quantenoptik, D-85740 Garching, Federal Republic of Germany
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Abstract

Spherical gold Hohlraums were heated by the iodine laser ASTERIX IV (200 J/0.4 ns at 440 nm) and were used to investigate radiative heating of low-Z plastic foils at temperatures up to 100 eV by time-resolved XUV emission and absorption spectroscopy. Spectra of the reemitted radiation (the albedo) for different C-, O-, F-, or Cl-containing plastic materials are presented. Depending on the material, the typical total (frequency-integrated) reemission is in the range of ≈10% of the gold reemission. By measuring the absorption spectra it was possible to follow the burnthrough in carbon from the initial solid degenerate state up to a high ionization state with absorption lines due to hydrogen-like carbon corresponding to a temperature of about 100 eV. The propagation of the heat wave into the material also has been studied by observing the emission from boron tracer layers embedded at different depths in the plastic foil. The experimental observations are compared with MULTI simulations.

Type
Regular Papers
Information
Laser and Particle Beams , Volume 14 , Issue 3 , September 1996 , pp. 487 - 500
Copyright
Copyright © Cambridge University Press 1996

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