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

Dolan, Daniel H.

关键词: COATINGS;    COMPRESSION;    EMISSIVITY;    INFRARED RADIATION;    NSLS;    TEMPERATURE MEASUREMENT Metallurgical analysis.;    Infrared radiation.;    Metals at high temperatures.;    Temperature measurements.;   

DOI  :  10.2172/922084
RP-ID  :  SAND2007-6376
PID  :  OSTI ID: 922084
Others  :  TRN: US0802169

学科分类：核物理和高能物理

美国|英语

来源: SciTech Connect

【 摘 要 】

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.