Prospects for fluorescence based imaging/visualization of hydrodynamic systems on the National Ignition Facility
Description: The next generation of large, high power lasers, such as the National Ignition Facility (NIF)  in the United States, Laser Mega Joule  in France or Helen Successor  in the United Kingdom offer the prospect of x-ray fluorescence based diagnosis of hydrodynamic experiments The x-ray fluorescence could be pumped by at least two techniques One technique is to use a sizable fraction of these facilities` high power to efficiently make multi-kilovolt x-rays which, in turn, causes dopants placed in experimental packages to fluoresce We call this ``externally pumped x-ray fluorescence`` The second technique is to use the sizable multi-kilovolt photon background that we expect to be present in many hohlraum based experiments, while the driving laser is on, to pump x-ray fluorescence The fluorescing medium could be a dopant in an experimental package or, possibly, a relatively thick slab of material in the hohlraum wall which could serve as a backlighter We call this ``hohlraum hot-corona pumped fluorescence``.
Date: June 4, 1998
Creator: Suter, L. J., LLNL
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