ENERGY PARTITIONING, ENERGY COUPLING (EPEC) EXPERIMENTS AT THE NATIONAL IGNITION FACILITY

Fournier, K B ; Brown, C G ; May, M J ; Dunlop, W H ; Compton, S M ; Kane, J O ; Mirkarimi, P B ; Guyton, R L ; Huffman, E

关键词: COUPLING;    ENERGY DENSITY;    LASER TARGETS;    US NATIONAL IGNITION FACILITY;    WAVE FORMS;   

DOI  :  10.2172/1034490
RP-ID  :  LLNL-TR-523011
PID  :  OSTI ID: 1034490
Others  :  TRN: US1200865

美国|英语

来源: SciTech Connect

【 摘 要 】

The energy-partitioning, energy-coupling (EPEC) experiments at the National Ignition Facility (NIF) will simultaneously measure the coupling of energy into both ground shock and air-blast overpressure from a laser-driven target. The source target for the experiment is positioned at a known height above the ground-surface simulant and is heated by four beams from NIF. The resulting target energy density and specific energy are equal to those of a low-yield nuclear device. The ground-shock stress waves and atmospheric overpressure waveforms that result in our test system are hydrodynamically scaled analogs of seismic and air-blast phenomena caused by a nuclear weapon. In what follows, we discuss the motivation for our investigation and briefly describe NIF. Then, we introduce the EPEC experiments, including diagnostics, in more detail.