Repeatability in radiative shock tube experiments

We report here data gathered regarding radiative shock experiments carried out on October 23, 2008. This day featured a number of nominally identical experimental shots. We discuss the degree to which the shots qualitatively differed from one to another and to what degree quantitative measurements, such as shock position, proved to have repeatably obtainable values. In particular, we call attention to the use of radiative precursor-launched wall shocks as a diagnostic feature.