A dual high-energy radiography platform with 15 μm resolution at the National Ignition Facility

• DOI: 10.1063/5.0044043
• Publication Date: 2021-04-28T12:14:52Z
• Authors: S. F. Khan; D. A. Martinez; D. H. Kalantar; R. K. Kirkwood; C. Santos; N. A. Ose; S. Johnson; D. A. Alessi; M. A. Prantil; D. T. Woods; S. G. Glendinning; R. Tommasini; A. J. Mackinnon; S. T. Prisbrey; T. R. Dittrich; M. W. Bowers; J. Cabral; J. Crane; J. -M. Di Nicola; M. Hamamoto; S. Herriot; T. Lanier; R. Lowe-Webb; L. J. Pelz; C. C. Widmayer; W. Williams; S. Yang
• Keywords: National Ignition Facility

To study matter at extreme densities and pressures, we need mega laser facilities such as the National Ignition Facility well creative methods to make observations during timescales of a billionth second. facilitate this, developed platform diagnostic characterize new point-projection radiography configuration using two micro-wires irradiated by short pulse system that provides large field view with up 3.6 ns separation between images. We used tungsten-carbide solid spheres reference objects inferred characteristics back-lighter source forward-fitting algorithm. The resolution is be 15 μm (using 12.5 diameter wires). bremsstrahlung temperature 70–300 keV, depending on energy coupling efficiency. By adding images recorded multiple stacked image plates, signal-to-noise nearly doubled. imaging characterization technique described here can adapted most platforms where resolution, spectral contrast, are important.