Experimental evidence of the generation of multi-hundred megabar pressures in 0.26 μm wavelength laser experiments
- 1 February 1986
- journal article
- research article
- Published by Cambridge University Press (CUP) in Laser and Particle Beams
- Vol. 4 (3-4) , 413-419
- https://doi.org/10.1017/s0263034600002081
Abstract
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.Keywords
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