Hugoniot Measurements at Low Pressures in Tin Using 800 MeV proton Radiography

Conference · Wed Aug 05 00:00:00 EDT 2009

DOI:https://doi.org/10.1063/1.3295188· OSTI ID:992181

Schwartz, Cynthia ^[1]; Hogan, Gary E ^[1]; King, Nicholas S. P. ^[1]; Kwiathowski, Kris K. ^[1]; Mariam, Fesseha G. ^[1]; Marr-Lyon, Mark ^[1]; McNeil, Wendy Vogan ^[1]; Merrill, Frank E. ^[1]; Morris, Christopher ^[1]; Rightley, Paul ^[1]; Saunders, Alexander ^[1]

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1. Los Alamos National Laboratory

A 2cm long 8 mm diameter cylindrical tin target has been shocked to a pressure in the region of the {beta} {yields} {gamma} phase change using a small, low density PETN charge mounted on the opposite side of a stainless steel diaphragm. The density jump and shock velocity were measured radiographically as the shock wave moved through the sample and the pressure dropped, using the proton radiography facility at LANL. This provided a quasi-continuous record of the equations of state along the Hugoniot for the P1 wave from a shock velocity of 3.25 km/sec down to near the sound speed. Edge release effects were removed from the data using tomographic techniques. The data show evidence for a phase transition that extends over a broad pressure range. The data and analysis will be presented.

• Research Organization: Los Alamos National Laboratory (LANL)
• Sponsoring Organization: DOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 992181
• Report Number(s): LA-UR-09-05017; LA-UR-09-5017
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY