Radiation-Driven Hydrodynamics of High-Z Hohlraums on the National Ignition Facility

Journal Article · Fri Nov 18 00:00:00 EST 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.215004· OSTI ID:20699584

Dewald, E L; Suter, L J; Landen, O L; Holder, J P; Schein, J; Lee, F D; Campbell, K M; Weber, F A; Schneider, M B; Celeste, J R; McDonald, J W; Niemann, C; Mackinnon, A J; Glenzer, S H; Young, B K; Haynam, C A; Shaw, M J; Turner, R E; Froula, D; Kauffman, R L ^[1]

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1. LLNL, P.O. Box 808, Livermore, California 94550 (United States); and others

The first hohlraum experiments on the National Ignition Facility (NIF) using the initial four laser beams tested radiation temperature limits imposed by plasma filling. For a variety of hohlraum sizes and pulse lengths, the measured x-ray flux shows signatures of filling that coincide with hard x-ray emission from plasma streaming out of the hohlraum. These observations agree with hydrodynamic simulations and with an analytical model that includes hydrodynamic and coronal radiative losses. The modeling predicts radiation temperature limits with full NIF (1.8 MJ), greater, and of longer duration than required for ignition hohlraums.

• OSTI ID: 20699584
• Journal Information: Physical Review Letters, Vol. 95, Issue 21; Other Information: DOI: 10.1103/PhysRevLett.95.215004; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ELECTRON TEMPERATURE
ENERGY LOSSES
HARD X RADIATION
HYDRODYNAMICS
ION TEMPERATURE
LASERS
PHOTON EMISSION
PLASMA
PLASMA SIMULATION
US NATIONAL IGNITION FACILITY