One-dimensional isentropic compression
G. A. Lyzenga, Thomas J. Ahrens · 1982
The generation of nearly isentropic pressure-density states in a molecular fluid sample, e.g.H20 is examined by a series of onedimensional finite difference calculations.We employ a series of buffer materials of increasing shock impedance (Lexan, AI, Fe, W) behind the sample and impact it with a composite flyer plate of the same series of materials.In the case of H20 impacted at 2.5 km/sec, three-fold nearly isentropic compression to a pressure of 70 GPa is achieved in i0 ~sec with a 3 cm thick composite impactor.