Simultaneous Transverse Radiography Using Short-Pulse Generated Probes

Radiography is a primary tool for determining the position of shocks and interfaces in both heed and larger scale dynamic objects.  These objects are frequently of high atomic number and have large areal density.  More information about an expensive experiment could be gained by using probe beams of different species, e.g. x ray and protons, to measure the same phenomenon simultaneously.  We have succeeded in making simultaneous measurements of a static object using short-pulls laser generated x-ray and proton beams.  The two probes were at right angles to one another.  An impediment to this test was the presence of a large electron background emitted by the proton-generating target.  These electrons were blocked by a simple shield that protected the x-ray detector placed at right angles to the proton beam.