Multiple-view spectrally resolved x-ray imaging observations of polar-direct-drive implosions on OMEGA

摘要

We present spatially, temporally, and spectrally resolved narrow- andbroad-band x-ray images of polar-direct-drive (PDD) implosions on OMEGA. Theseself-emission images were obtained during the deceleration phase and bang timeusing several multiple monochromatic x-ray imaging instruments fielded alongtwo or three quasi-orthogonal lines-of-sight including equatorial and polarviews. The instruments recorded images based on K-shell lines from a titaniumtracer located in the shell as well as continuum emission. These observationsconstitute the first such data obtained for PDD implosions. The image data showfeatures attributed to zero-order hydrodynamics. Equatorial view syntheticimages obtained from post-processing a 2D hydrodynamic simulation areconsistent with the experimental observation. Polar view images show apentagonal pattern that correlates with the PDD laser illumination used onOMEGA, thus revealing a 3D aspect of these experiments not previously observed.