Challenges and opportunities for measuring metal temperature during shock-ramp compression

Temperature is an elusive measurement, but great strides have been made for metals under shock-ramp compression. Combining experience from plate impact experiments with newer technologies, near-infrared pyrometry is viable for temperatures from 900 K to 3000 K at several nanosecond rise times. Moderate shock compression (10--50 GPa) followed by continuously increasing pressure allows a variety of metal temperatures to be measured. This presentation will describe how shock-ramp temperatures are measured at the Sandia Z machine, summarizing challenges that have been overcome and ongoing work needed to extend this capability.