Experiments to characterize a >100 keV, high resolution X-ray backlighter for cylindrical imploding liners at the Z machine

• Published in: 2011 Abstracts IEEE International Conference on Plasma Science p. 1
• Main Authors: Webb, T. J., Geissel, M., Oliver, B. V., Flicker, D. G., Lemke, R. W., Campbell, R. B., Miller, C. L.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.06.2011
• Subjects: Laboratories
• ISBN: 1612843301; 9781612843308
• ISSN: 0730-9244
• DOI: 10.1109/PLASMA.2011.5992990

Summary form only given. Equation of state (EOS) information of high-atomic number materials may be obtained via cylindrical liner implosion experiments at the Sandia National Laboratories Z facility. X-ray radiography measurements, beyond the current backlighting capabilities at Z (Z-Beamlet), are desired for these experiments. Required characteristics of the x-ray source include: short pulse on the order of a picosecond, high photon fluence (several hundred mrads at 1 meter), greater than 100 keV effective photon energy, and a source size of less than 50 microns in at least one spatial direction. Particle-in-cell calculations suggest that a radiography source supplied by the Z-Petawatt laser incident on a high atomic number foil may meet these requirements. Typical laser parameters are: ~100 J in a ~500 fs pulse focused to ~6 micron diameter at a laser wavelength of 1053 nm.