Experimental demonstration of X-ray drive enhancement with rugby-shaped hohlraums.
Rugby-shaped hohlraums have been suggested as a way to enhance x-ray drive in the indirect drive approach to inertial confinement fusion. This Letter presents an experimental comparison of rugby-shaped and cylinder hohlraums used for D2 and D3He-filled capsules implosions on the Omega laser facility, demonstrating an increase of x-ray flux by 18% in rugby-shaped hohlraums. The highest yields to date for deuterium gas implosions in indirect drive on Omega (1.5x10{10} neutrons) were obtained, allowing for the first time the measurement of a DD burn history. Proton spectra measurements provide additional validation of the higher drive in rugby-shaped hohlraums.
Philippe
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CEA, DAM, DIF, F-91297 Arpajon, France.
Casner
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Caillaud
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Landoas
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Monteil
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Liberatore
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Park
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Amendt
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Robey
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Sorce
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Li
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Seguin
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Rosenberg
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Petrasso
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Glebov
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Stoeckl
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