Experimental evidence of the generation of multi-hundred megabar pressures in 0.26 μm wavelength laser experiments

A 9 μm thick aluminium foil is accelerated to a velocity of about 160 km/s by a laser of 0.26 μm wavelength and intensity of 1015 W/cm2 and collides with an aluminium impact foil. The measurement of the velocity of the induced shock wave in the impact foil, using a step method at the rear of the imp...

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Bibliographic Details
Published in:Laser and particle beams 1986-08, Vol.4 (3-4), p.413-419
Main Authors: Fabbro, R., Faral, B., Virmont, J., Pepin, H., Cottet, F., Romain, J. P.
Format: Article
Language:English
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Summary:A 9 μm thick aluminium foil is accelerated to a velocity of about 160 km/s by a laser of 0.26 μm wavelength and intensity of 1015 W/cm2 and collides with an aluminium impact foil. The measurement of the velocity of the induced shock wave in the impact foil, using a step method at the rear of the impact foil, gives pressures in the multi-hundred megabar range. The dynamics and constraints of this shock wave are presented and the effect of X-ray preheating, which can be important at this laser wavelength, is discussed.
ISSN:0263-0346
1469-803X
DOI:10.1017/S0263034600002081