4.8 Article

Demonstration of Ignition Radiation Temperatures in Indirect-Drive Inertial Confinement Fusion Hohlraums

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PHYSICAL REVIEW LETTERS
卷 106, 期 8, 页码 -

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AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.085004

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  1. U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]

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We demonstrate the hohlraum radiation temperature and symmetry required for ignition-scale inertial confinement fusion capsule implosions. Cryogenic gas-filled hohlraums with 2.2 mm-diameter capsules are heated with unprecedented laser energies of 1.2 MJ delivered by 192 ultraviolet laser beams on the National Ignition Facility. Laser backscatter measurements show that these hohlraums absorb 87% to 91% of the incident laser power resulting in peak radiation temperatures of T(RAD) = 300 eV and a symmetric implosion to a 100 mu m diameter hot core.

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