Preliminary Direct Laser Drive Absolute Equation of State Measurments of Beryllium Using the Nova Facility

Details Preliminary Direct Laser Drive Absolute Equation of State Measurments of Beryllium Using the Nova Facility Preliminary Direct Laser Drive Absolute Equation of State Measurments of Beryllium Using the Nova Facility

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..shk..l130b&link_type=abstract

American Physical Society, Shock Compression Meeting, July 27 - August 1, 1997, abstract #L1.30

Computer Science

Sound

Scientific paper

Initial direct-drive absolute EOS measurements of Be on Nova will be presented. Additionally, we will discuss: (a) the design, details, and fabrication of a high-resolution 4.75 keV monochromatic one-dimensional (1D) x-ray microscope intended to improve the quality of simultaneous U_s, U_p, and ρ measurements in materials which may be x-ray transparent, partially transmitting, or even opaque to the sidelighting x-rays; (b) a novel method for the measurement of EOS sample preheat via the measurement of kbar-scale pressures - using piezoelectric transducers - induced by laser-generated high-energy x-rays penetrating the pusher and heating an EOS sample surface; (c) 1 & 2D radiation-hydrodynamic code investigations of required laser temporal pulse shapes, inherent hydro smoothing of the temporal pressure profile using thick pushers, preheat prevention of Au EOS samples using a two-stage shock-relay pusher technique consisting of two thick layers of separate high- (Au) and low-Z (Be) materials, etc.; (d) and the novel design of a sound speed experiment.

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