Characterizing the emissivity of materials under dynamic compression (final report for LDRD project 79877).

Technical Report · Mon Oct 01 00:00:00 EDT 2007

DOI:https://doi.org/10.2172/922084· OSTI ID:922084

Dolan, Daniel H

Temperature measurements are crucial to equation of state development, but difficult to perform reliably. In the case of infrared pyrometry, a large uncertainty comes from the fact that sample emissivity (the deviation from a blackbody) is unknown. In this project, a method for characterizing the emissivity of shocked materials was developed. By coupling infrared radiation from the National Synchrotron Light Source to a gas gun system, broad spectrum emissivity changes were studied to a peak stress of 8 GPa. Emissivity measurements were performed on standard metals (Al, Cr, Cu, and Pt) as well as a high emissivity coating developed at Sandia.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 922084
• Report Number(s): SAND2007-6376; TRN: US0802169
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
COATINGS
COMPRESSION
EMISSIVITY
INFRARED RADIATION
NSLS
TEMPERATURE MEASUREMENT
Metallurgical analysis.
Infrared radiation.
Metals at high temperatures.
Temperature measurements.