Demonstrated high performance of gas-filled rugby-shaped hohlraums on Omega

A direct experimental comparison of rugby-shaped and cylindrical shaped gas-filled hohlraums on the Omega laser facility demonstrates that higher coupling and minimal backscatter can be achieved in the rugby geometry, leading to significantly enhanced implosion performance. A nearly 50% increase of...

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Bibliographic Details
Published in:Physics of plasmas 2014-07, Vol.21 (7)
Main Authors: Philippe, F., Tassin, V., Depierreux, S., Gauthier, P., Masson-Laborde, P. E., Monteil, M. C., Seytor, P., Villette, B., Lasinski, B., Park, H. S., Ross, J. S., Amendt, P., Döppner, T., Hinkel, D. E., Wallace, R., Williams, E., Michel, P., Frenje, J., Gatu-Johnson, M., Li, C. K., Petrasso, R., Glebov, V., Sorce, C., Stoeckl, C., Nikroo, A., Giraldez, E.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Backscattering
Hohlraums
Plasma physics
Rugby
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Summary:A direct experimental comparison of rugby-shaped and cylindrical shaped gas-filled hohlraums on the Omega laser facility demonstrates that higher coupling and minimal backscatter can be achieved in the rugby geometry, leading to significantly enhanced implosion performance. A nearly 50% increase of x-ray drive is associated with earlier bangtime and increase of neutron production. The observed drive enhancement from rugby geometry in this study is almost twice stronger than in previously published results.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4890485