Comparison of Absolutely Calibrated CCD and Film Images

In recent years the use of absolutely calibrated x-ray film images has proven very useful in understanding the details of ICF implosions. This is because the absolute calibration provides a direct measure of the time-integrated temperature history of the implosion. Such analysis has previously provided direct evidence of anomalous heating in indirect drive implosions. Based on calibration with laboratory standard x-ray sources, the uncertainty in film calibration is expected to be much better than a factor of 2, probably around 25%. CCD images of capsule implosions have also been taken. Qualitative comparisons of these images with simulataneously-obtained x-ray film images have been previously performed. In this presentation we extend the analysis to a quantitative comparison using the separate absolute calibrations of the CCD camera and the x-ray film. This work was supported by the U.S. Department of Energy.