MS&E Colloquium - Cynthia L. Schwartz
Date: October 09, 2009 from 2:00 pm to 3:00 pm EDT
Location: 214 S. W. Mudd
Contact: For further information regarding this event, please contact Chad Gurley by sending email to cg2029@columbia.edu .
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MS&E Colloquium:

Cynthia L. Schwartz,
R&D Scientist 3, Los Alamos National Laboratory

Proton Radiography: Studying Dynamic Properties of Shock-Loaded Materials

Proton Radiography, invented at Los Alamos National laboratory, uses a high-energy proton beam to image the properties and behavior of materials driven by high explosives. In recent years, we have coupled a 40mm bore Powder Gun to the Proton Radiography beam line, synchronizing the impact of the projectile on the target sample to the proton beam pattern resulting in direct bulk measurements of materials. We have also shocked metals with an unsupported Taylor Wave and measured many points on the principal Hugoniot in a single experiment. In the past, proton radiography experiments have been limited by the number of frames due to the physical limitation of space for cameras. A new CMOS hybrid camera technology has been developed and fielded resulting in dramatic improvements in quantum efficiency as well as providing up to 41 radiographic images per dynamic event. I will describe these new capabilities and some experimental results using these advances.