Physics – Plasma Physics
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..dppgm1006k&link_type=abstract
American Physical Society, 45th Annual Meeting of the Division of Plasma Physics, October 27-31, 2003, Albuquerque, New Mexico,
Physics
Plasma Physics
Scientific paper
Jet-like structures are ubiquitous throughout our observations of the universe. Morphologies range from the highly directed flows from young stellar objects and active galactic nuclei to the diffuse flows from planetary nebulae. A test-bed to study the hydrodynamics of jet-like fluid flow is being developed at the OMEGA laser facility. Targets that create plasma flow from laser ablation are being studied to determine the optimum geometry for two classes of phenomena. The first is the collimated expansion of a fluid into an ambient medium; the second is the interaction of high-speed, dense matter with a background fluid. Both of these types of targets show fluid motion that resembles a jet-like structure. X-ray radiography techniques are being investigated to optimize the data for comparison to hydrodynamic simulations. Point-projection backlighters have the potential of illuminating large fields of view with 10- to 15-μm resolution. Emission from 3 keV to 8 keV is needed to look at the evolution of the jet and how it interacts with the surrounding medium. The energy spectral content of the emission will determine the contrast of the radiograph and hence the observable density difference. Data will be presented that show the status of the development of the astrophysical jet test bed and how it will be used to test the hydrodynamic simulations of these flows. This work was supported by the U.S. Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement No. DE-FC03-92SF19460.
Blue Brent
Collins Timothy James Bradford
Drake Paul R.
Foster John M.
Frank Alejandro
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