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Proceedings Paper

Laser generated high-pressure shock wave experiments and their simulations
Author(s): V. K. Senecha; M. Shukla; Buddhi K. Godwal; H. C. Pant
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Paper Abstract

Laser driven shock wave experiments were performed to study the equation of state (EOS) of Cu material using impedance-matching technique with Al as reference material. An Nd:YAG laser chain (2 Joule, 1.06 μm wavelength, 200 ps pulse FWHM) was used for generating shocks in the planar Al foils and Al-Cu layered targets. EOS of materials at shock pressure up to 11 Mbar is obtained with pressure enhancement by a factor of 1.67 at Al-Cu interface. Numerical simulations performed using one-dimensional radiation hydrodynamic code MULTI show close agreement with the experimental value of shock pressure enhancement. Simulation reveals the fact that 5 - 6 μm thickness of Al foil as a reference material is sufficient to prevent the x-ray preheating effect as well as to attain planar and steady shock wave propagation for a given laser beam used in the experiment. The experimental Hugoniot data points obtained are in excellent agreement with the existing standard SESAME data and with other reported experimental results.

Paper Details

Date Published: 12 December 2003
PDF: 10 pages
Proc. SPIE 5228, ECLIM 2002: 27th European Conference on Laser Interaction with Matter, (12 December 2003); doi: 10.1117/12.534320
Show Author Affiliations
V. K. Senecha, Ctr. for Advanced Technology (India)
M. Shukla, Bhabha Atomic Research Ctr. (India)
Buddhi K. Godwal, Bhabha Atomic Research Ctr. (India)
H. C. Pant, Ctr. for Advanced Technology (India)


Published in SPIE Proceedings Vol. 5228:
ECLIM 2002: 27th European Conference on Laser Interaction with Matter
Oleg N. Krokhin; Sergey Yu. Gus'kov; Yury A. Merkul'ev, Editor(s)

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