Demonstration Of A Long Pulse X-Ray Source At The National Ignition Facility

A long duration high fluence x-ray source has been developed at the National Ignition Facility (NIF). The target was a 14.4 mm tall, 4.1 mm diameter, epoxy walled, gas filled pipe. Approximately 1.34 MJ from the NIF laser was used to heat the mixture of (55: 45) Kr:Xe at 1.2 atm (similar to 5.59 mg/cm(3)) to emit in a fairly isotropic radiant intensity of 400-600 GW/sr from the E-photon = 3-7 keV spectral range for a duration of approximate to 14 ns. The HYDRA simulated radiant intensities were in reasonable agreement with experiments but deviated at late times. Published by AIP Publishing.