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arXiv · 1406.4490

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

R. C. Mancini·H. M. Johns·T. Joshi·D. Mayes·T. Nagayama·S. C. Hsu·J. A. Baumgaertel·J. Cobble·N. S. Krasheninnikova·P. A. Bradley·P. Hakel·T. J. Murphy·M. J. Schmitt·R. C. Shah·I. L. Tregillis·F. J. Wysocki
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Abstract

We present spatially, temporally, and spectrally resolved narrow- and broad-band x-ray images of polar-direct-drive (PDD) implosions on OMEGA. These self-emission images were obtained during the deceleration phase and bang time using several multiple monochromatic x-ray imaging instruments fielded along two or three quasi-orthogonal lines-of-sight including equatorial and polar views. The instruments recorded images based on K-shell lines from a titanium tracer located in the shell as well as continuum emission. These observations constitute the first such data obtained for PDD implosions. The image data show features attributed to zero-order hydrodynamics. Equatorial view synthetic images obtained from post-processing a 2D hydrodynamic simulation are consistent with the experimental observation. Polar view images show a pentagonal pattern that correlates with the PDD laser illumination used on OMEGA, thus revealing a 3D aspect of these experiments not previously observed.

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R. C. Mancini, H. M. Johns, T. Joshi, D. Mayes, T. Nagayama, S. C. Hsu, J. A. Baumgaertel, J. Cobble, N. S. Krasheninnikova, P. A. Bradley, P. Hakel, T. J. Murphy, M. J. Schmitt, R. C. Shah, I. L. Tregillis, F. J. Wysocki. 2014-06-17. Multiple-view spectrally resolved x-ray imaging observations of polar-direct-drive implosions on OMEGA. https://doi.org/10.1063/1.4903324

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