Angularly resolved x-ray scattering measurements of shock and ramp compressed polycrysaalline diamond
ORAL
Abstract
Direct measurements of the crystal structure of materials under shock and ramp compression can be obtained using 2D angularly resolved x-ray scattering at the MEC end station of the LCLS facility. Diamond has been proposed as an ablator material for inertial confinement fusion targets, requiring a better understanding how the crystal structure responds to dynamic compression. In this experiment we used the two 527 nm optical lasers to compress 25 and 50 $\mu m$ diamond foils. Each beam provided 6 J in 3 ns focused to an intensity of $4 \times 10^{14}$ W/cm${}^2$ with different pulse shapes to provide shock and ramp compression. Compression and lattice deformation measurements were made directly from angularly resolved x-ray scattering and compared to DFT simulations.
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