LLNL Contribution to LLE FY09 Annual Report: NIC and HED Results

Heeter, R F ; Landen, O L ; Hsing, W W ; Fournier, K B

关键词: CONFIGURATION;    COPPER;    IGNITION;    IMPLOSIONS;    KINETICS;    LASERS;    OPACITY;    PHYSICAL PROPERTIES;    PHYSICS;    QUARTZ;    RADIATION TRANSPORT;    SCATTERING;    SYMMETRY;    TARGETS;    THERMODYNAMICS;    THERMONUCLEAR FUELS;    THOMSON SCATTERING;    TUNING;    VALIDATION;    VELOCITY;   

DOI  :  10.2172/971782
RP-ID  :  LLNL-TR-418046
PID  :  OSTI ID: 971782
Others  :  TRN: US1001950

美国|英语

来源: SciTech Connect

【 摘 要 】

In FY09, LLNL led 238 target shots on the OMEGA Laser System. Approximately half of these LLNL-led shots supported the National Ignition Campaign (NIC). The remainder was dedicated to experiments for the high-energy-density stewardship experiments (HEDSE). Objectives of the LLNL led NIC campaigns at OMEGA included: (1) Laser-plasma interaction studies in physical conditions relevant for the NIF ignition targets; (2) Demonstration of Tr = 100 eV foot symmetry tuning using a reemission sphere; (3) X-ray scattering in support of conductivity measurements of solid density Be plasmas; (4) Experiments to study the physical properties (thermal conductivity) of shocked fusion fuels; (5) High-resolution measurements of velocity nonuniformities created by microscopic perturbations in NIF ablator materials; (6) Development of a novel Compton Radiography diagnostic platform for ICF experiments; and (7) Precision validation of the equation of state for quartz. The LLNL HEDSE campaigns included the following experiments: (1) Quasi-isentropic (ICE) drive used to study material properties such as strength, equation of state, phase, and phase-transition kinetics under high pressure; (2) Development of a high-energy backlighter for radiography in support of material strength experiments using Omega EP and the joint OMEGA-OMEGA-EP configuration; (3) Debris characterization from long-duration, point-apertured, point-projection x-ray backlighters for NIF radiation transport experiments; (4) Demonstration of ultrafast temperature and density measurements with x-ray Thomson scattering from short-pulse laser-heated matter; (5) The development of an experimental platform to study nonlocal thermodynamic equilibrium (NLTE) physics using direct-drive implosions; (6) Opacity studies of high-temperature plasmas under LTE conditions; and (7) Characterization of copper (Cu) foams for HEDSE experiments.