HARD X‐RAYS AS A DIAGNOSTIC TOOL FOR WARM DENSE MATTER

We present the application of short‐pulse laser‐driven hard x‐rays (>40 keV) for the direct density measurement of iron compressed by a laser‐driven shock. By using an on‐shot calibration of the line density, we are able to obtain line densities even though the x‐ray source is not monochromatic. The consequences for the line density measurement using a polychromatic source are discussed in detail, as well as the calibration method we propose to solve this problem.