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Generation of a double shock driven by laser.
A Benuzzi-Mounaix1, M Koenig, G Huser
1Laboratoire pour l'Utilisation des Lasers Intenses (LULI), Unité Mixte No. 7605, CNRS, CEA, Ecole Polytechnique, Université Pierre et Marie Curie, 91128 Palaiseau, France.
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|December 17, 2004
Summary
Researchers demonstrated a reliable multiple laser shock technique for studying material equations of state beyond the principal Hugoniot curve. This method uses a double laser pulse to achieve isentropic compression, offering new insights into material behavior under extreme conditions.
Area of Science:
- Materials Science
- High-Energy-Density Physics
- Shock Physics
Background:
- Studying material properties off the principal Hugoniot curve is crucial for understanding extreme conditions.
- Isentropic compression provides a more accurate method for equation of state determination compared to shock compression.
- Existing techniques may have limitations in achieving precise control over compression pathways.
Purpose of the Study:
- To demonstrate the feasibility and reliability of a novel multiple laser shock technique.
- To investigate the equation of state surface of materials off the principal Hugoniot curve.
- To explore the potential for achieving isentropic compression using this method.
Main Methods:
- Utilized a double laser pulse technique for shock generation.
- Employed precompression of iron targets with a weak shock before applying a strong shock.
- Performed experiments at the Laboratoire pour l'Utilisation des Lasers Intenses (LULI).
Main Results:
- Successfully demonstrated the feasibility and reliability of the multiple laser shock generation technique.
- Showcased the ability to study the equation of state surface off the principal Hugoniot curve.
- Indicated the potential to approach isentropic compression conditions.
Conclusions:
- The developed multiple laser shock technique is a viable and reliable method for advanced equation of state studies.
- Precompression significantly influences the shock response, enabling access to new material state regimes.
- This technique opens new avenues for precise material characterization under extreme dynamic compression.