Ramp Compression Measurements of Al, Fe, Ta, and W to a Few Mbar

We present ramp compression measurements of Ta, W, Al, and Fe using both pulse power and laser ramp compression platforms. Comparing both platforms allows us to span material thicknesses from 10 $\mu$m to 1mm and compression timescales from 1 ns to several hundred ns. While it is difficult to study precisely the same material on both platforms, we compare the stress density and elastic plastic transition for each of these metals under ramp loading to Mbar stress levels.