Publications

Determination of pressure and density of shocklessly compressed beryllium from x-ray radiography of a magnetically driven cylindrical liner implosion

Lemke, R.W.; Martin, M.R.; McBride, Ryan D.; Davis, Jean-Paul D.; Knudson, Marcus D.; Sinars, Daniel S.; Smith, Ian C.; Savage, Mark E.; Stygar, William A.; Killebrew, K.; Flicker, Dawn G.; Herrmann, Mark H.

We describe a technique for measuring the pressure and density of a metallic solid, shocklessly compressed to multi-megabar pressure, through x-ray radiography of a magnetically driven, cylindrical liner implosion. Shockless compression of the liner produces material states that correspond approximately to the principal compression isentrope (quasi-isentrope). This technique is used to determine the principal quasi-isentrope of solid beryllium to a peak pressure of 2.4 Mbar from x-ray images of a high current (20 MA), fast (∼100 ns) liner implosion. © 2012 American Institute of Physics.