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Radiation effects on shock propagation in Al target relevant to equation of state measurements

Published online by Cambridge University Press:  28 February 2007

T. DESAI
Affiliation:
Dipartimento di Fisica “G.Occhialini,” Università di Milano-Bicocca, Milano, Italy ETSII, Universidad Politecnica, Madrid, Spain
R. DEZULIAN
Affiliation:
Dipartimento di Fisica “G.Occhialini,” Università di Milano-Bicocca, Milano, Italy
D. BATANI
Affiliation:
Dipartimento di Fisica “G.Occhialini,” Università di Milano-Bicocca, Milano, Italy

Abstract

We present one-dimensional simulations performed using the multi group radiation hydro code MULTI with the goal of analyzing the target preheating effect under conditions similar to those of recent experiments aimed at studying the Equation of State (EOS) of various materials. In such experiments, aluminum is often used as reference material; therefore its behavior under strong shock compression and high-intensity laser irradiation (1013–1014 W/cm2) should be studied in detail. Our results reveal that at high laser irradiance, the laser energy available to induce shock pressure is reduced due to high X-rays generation. Simultaneously X-rays preheat the bulk of the reference material causing significant heating prior to shock propagation. Such effects induce deviations in shock propagation with respect to cold aluminum.

Type
Research Article
Copyright
© 2007 Cambridge University Press

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