Long-Duration X-Ray Source Development for X-Ray Diffraction at The National Ignition Facility

We investigate the feasibility of producing x-ray sources over timescales relevant to support time-resolved x-ray diffraction (XRDt) measurements during laser-driven dynamic compression experiments at the National Ignition Facility (NIF) [1] . XRDt probes the atomic structure in-situ of transformations at extreme thermodynamic conditions. To record XRD of phase transitions as they occur, we use high-speed (~1 ns) gated hybrid CMOS (hCMOS) imagers [2] , which provide multiple frames of data over a timescale of a few to tens of ns. Consequently, to make effective use of these imagers, the x-ray source needs to be monochromatic and uniform as long as the sensors are active.