Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-07T20:00:26.018Z Has data issue: false hasContentIssue false
  • English
  • Français

Temperature measurements of very high pressure laser shocks above 100 Mbars using time-resolved X-UV spectroscopy

Published online by Cambridge University Press:  09 March 2009

Remy Fabbro  and
Bernard Faral
Remy Fabbro
Affiliation:
Laboratoire d'Application des Lasers de Puissance (Unité mixte ETCA-CNRS), 16 bis Ave. Prieur de la Cote d'Or, 94114 Arcueil Cedex, France
Bernard Faral
Affiliation:
Laboratoire d'Application des Lasers de Puissance (Unité mixte ETCA-CNRS), 16 bis Ave. Prieur de la Cote d'Or, 94114 Arcueil Cedex, France
Get access Rights & Permissions [Opens in a new window]

Abstract

Impedance-matching experiments are realized with a 0.26-μm-wavelength high-intensity laser irradiation of two-layered targets (Al-Au). From an ablation pressure of 50 Mbars produced in Al, a 100-Mbar shock pressure is obtained in Au. The X-UV emissivity of this shock at its breakthrough at the rear of the target is analyzed with a transmission grating coupled to an X-ray streak camera. Results obtained with various thicknesses of Al and constant Au thickness are shown, and compared with hydrodynamic codes where radiative transfer processes are taken into account. These preliminary experiments show that the estimated shock temperatures are consistent with the high pressures generated. This technique appears to be very promising for the task of obtaining equation-of-state data in these high-pressure ranges.

Type
Research Article
Information
Laser and Particle Beams , Volume 9 , Issue 2 , June 1991 , pp. 397 - 402
Copyright
Copyright © Cambridge University Press 1991

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Bennet, B. J. et al. 1978 Los Alamos National Laboratory Report No. LA–7130.Google Scholar
Cottet, F. et al. 1984 Phys. Rev. Lett. 52, 1884.CrossRefGoogle Scholar
Cottet, F. et al. 1985 ppl. Phys. Lett. 47, 7.Google Scholar
Fabbro, R. et al. 1990 Laser Part. Beams 8, 73.CrossRefGoogle Scholar
Gauthier, J. C. & Geindre, J. P. 1988 Annual Report of the Greco ILM (Ecole Polytechnique).Google Scholar
More, R. M. et al. 1987 UCRL Report No. 96675.Google Scholar
Shvarts, D. et al. 1979 Nucl. Fusion 19, 1457.CrossRefGoogle Scholar
Tsakiris, G. 1988 Proc. Soc. Photo-Opt. Instrum. Eng. 1032, 910.Google Scholar
Zeldovitch, Y. A. & Raizer, Y. U. 1967 Physics of Shock Waves and High Temperature Hydrodynamic Phenomena (Academic, New York), Vols. I and II.Google Scholar